@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://data.europa.eu/nuts/code/FI1B1> a dct:Location .

<http://publications.europa.eu/resource/authority/data-theme/REGI> a skos:Concept ;
    skos:prefLabel "Regions and cities"@en .

<http://publications.europa.eu/resource/authority/file-type/GEOJSON> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/MARKDOWN> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/OWL> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/YAML> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/frequency/ANNUAL> a dct:Frequency .

<http://www.iana.org/assignments/media-types/application/geo+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/application/ld+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/application/schema+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/csv> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/markdown> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/yaml> a dct:MediaType .

<http://www.opengis.net/doc/IS/ogcapi-features-1/1.0> a dct:Standard .

<https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/> a foaf:Document .

<https://kartta.hel.fi/ws/geoserver/avoindata/wfs?service=WFS&version=2.0.0&request=GetFeature&outputFormat=application/json&srsName=EPSG:4326&typeNames=avoindata:Kaupunginosajako> a dcat:Dataset ;
    dct:description "A WFS layer of the city's map service, as GeoJSON." ;
    dct:title "City districts" .

<https://kartta.hel.fi/ws/geoserver/avoindata/wfs?service=WFS&version=2.0.0&request=GetFeature&outputFormat=application/json&srsName=EPSG:4326&typeNames=avoindata:Piirijako_osaalue> a dcat:Dataset ;
    dct:description "A WFS layer of the city's map service, as GeoJSON." ;
    dct:title "City sub-districts" .

<https://modelcontextprotocol.io/specification> a dct:Standard .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/1686d08c-596d-44e6-b9a6-ae9858435c04> a dcat:Distribution ;
    dct:description """For AI assistants: a Model Context Protocol server over this dataset's endpoint https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e. It answers anyone, with no sign-in, what the endpoint serves the public.

Tools: `query_entities` (the rows of an entity type, with an NGSI-LD `q` filter, `attrs`, `count` and paging), `get_entity` (one entity by its URN), `describe_schema` (the data model: read it first) and `describe_access` (what you may read).

Licence: Creative Commons Attribution 4.0; the data is reused under it.

An MCP client reaches it with this configuration:

    {"mcpServers":{"helsinki-districts":{"type":"http","url":"https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/mcp"}}}
""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632100"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "Model Context Protocol" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <https://modelcontextprotocol.io/specification> ;
            dct:title "Model Context Protocol" ;
            dcat:endpointURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/mcp> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/mcp> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/3e3a6ece-79af-4716-a131-2be11b81b64c> a dcat:Distribution ;
    dct:description "The data model as OWL; sha256 2f44b6576a34bf015ae9d1b95e3e06a9394ecca277efdf9292d0f5f7bd389fb4." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/OWL> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632464"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.owl.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "2f44b6576a34bf015ae9d1b95e3e06a9394ecca277efdf9292d0f5f7bd389fb4"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.owl.ttl> ;
    dcat:byteSize "2201"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/4ec53f74-f873-42d5-8b61-6bcacc1ff297> a dcat:Distribution ;
    dct:description """Live updates: open one WebSocket, subscribe to the entities you want, and each change arrives as a message, with no server of your own. With websocat, then type the subscription:

    websocat --protocol ngsi-ld-ws 'wss://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ws'
    {"metadata":{"x-op":"x-subscribe","x-id":"s1"},"body":{"type":"Subscription","entities":[{"type":"AdministrativeArea"}]}}

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The message format, the limits and examples in JavaScript and Python: https://dev.joinedcontext.com/docs/API/07-websocket""" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.631926"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "Live updates over WebSocket" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ws> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/52fce00c-f100-4919-a503-dad076be0630> a dcat:Distribution ;
    dct:description """OData v4, read-only: each entity type is an entity set, with $filter, $select, $orderby and $top. In Excel: Data, Get Data, From Other Sources, From OData Feed, then the URL https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/odata/v4/. In Power BI: Get data, OData feed, the same URL. With curl:

    curl 'https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/odata/v4/'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/s3luopgog5nkxcpykwxdvhw22iis5n7e""" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632045"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "OData v4" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/odata/v4/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/56ad5787-bba5-4cec-8c93-6218f41c4a3a> a dcat:Distribution ;
    dct:description """The NGSI-LD API (ETSI GS CIM 009) of this dataset: query, filter and page its entities. The first ten AdministrativeArea entities:

    curl -H 'Accept: application/ld+json' 'https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ngsi-ld/v1/entities?type=AdministrativeArea&limit=10'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/s3luopgog5nkxcpykwxdvhw22iis5n7e""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON_LD> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.631744"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "NGSI-LD API" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <https://www.etsi.org/deliver/etsi_gs/CIM/001_099/009/> ;
            dct:title "NGSI-LD API" ;
            dcat:endpointURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ngsi-ld/v1/> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ngsi-ld/v1/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/6012aa7e-09d2-442a-9442-770798426f68> a dcat:Distribution ;
    dct:description "The data model as Markdown; sha256 2fe6cc84e80da3c1c9cb5387e70992563d3103a639030e2ede1337207e659c3f." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/MARKDOWN> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632390"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.md" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "2fe6cc84e80da3c1c9cb5387e70992563d3103a639030e2ede1337207e659c3f"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.md> ;
    dcat:byteSize "1423"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/markdown> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/6be822c8-be0c-48fe-93ba-451b2effd153> a dcat:Distribution ;
    dct:description "The data model as JSON Schema; sha256 a68ec960b93b0abaa43682963840c4ef3d76b99c8c19c55f6740a3aa1b943f3f." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632586"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.schema.json" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "a68ec960b93b0abaa43682963840c4ef3d76b99c8c19c55f6740a3aa1b943f3f"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.schema.json> ;
    dcat:byteSize "2180"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/schema+json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/78632928-a9d5-4759-abf1-41b884e9658f> a dcat:Distribution ;
    dct:description "The data model as LinkML; sha256 fa7d671336b2025a5b40b2adf13ad8199d3a3c74ea7754e5103012f9a89df6a4." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/YAML> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632328"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.linkml.yaml" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "fa7d671336b2025a5b40b2adf13ad8199d3a3c74ea7754e5103012f9a89df6a4"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.linkml.yaml> ;
    dcat:byteSize "4548"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/yaml> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/a55b572a-dbd1-4d50-b47d-a67cd4ede1ff> a dcat:Distribution ;
    dct:description "The data model as RDF; sha256 f64023913e0b6193f59806004fba5633a3a64c6196a16a0d037f349fd20d4df1." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632527"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.rdf.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "f64023913e0b6193f59806004fba5633a3a64c6196a16a0d037f349fd20d4df1"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.rdf.ttl> ;
    dcat:byteSize "1123"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/a5cdfae8-8321-448a-a8f1-d6116597b942> a dcat:Distribution ;
    dct:description "The data model in every formalism, for every model version, each artifact with its sha256 (EP-68)." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632155"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "Schema artifacts" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/index.json> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/ccb0c87a-cf2e-464a-b092-eeca636e548e> a dcat:Distribution ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T07:48:35.132092"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "AdministrativeArea" ;
    dcat:accessURL <https://opendata.dev.joinedcontext.com/datastore/dump/ccb0c87a-cf2e-464a-b092-eeca636e548e> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/e7776b95-0aed-422f-b2fe-236fab4fbddc> a dcat:Distribution ;
    dct:description "The data model as SHACL; sha256 7751a5a8c63582ad8b4423dba08e88fd4cf7f4fead4c739253ca49da93e06dda." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632652"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki model.shacl.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "7751a5a8c63582ad8b4423dba08e88fd4cf7f4fead4c739253ca49da93e06dda"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/model.shacl.ttl> ;
    dcat:byteSize "3106"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/ee0423a5-9d27-4acb-9b0b-0fa0275cd889> a dcat:Distribution ;
    dct:description """A CSV table, generated on each download from the endpoint's live data.

    curl -o file.csv 'https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/file.csv'

Open to anyone, with no sign-in.""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.631856"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "CSV" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/file.csv> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/csv> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/f68e37fb-1ae5-4dd4-991d-7daf8eebb1ef> a dcat:Distribution ;
    dct:description "The data model as JSON-LD; sha256 a9c1cc4b890b78ce9e3353a4900edce608f49da39c2fba5ac997cce7db368b98." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON_LD> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.632215"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "helsinki context.jsonld" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "a9c1cc4b890b78ce9e3353a4900edce608f49da39c2fba5ac997cce7db368b98"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/schema/v1/context.jsonld> ;
    dcat:byteSize "694"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/ld+json> .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/fea260f7-dbd9-4656-83e8-7dfc8efee00d> a dcat:Distribution ;
    dct:description """OGC API - Features, read-only: Part 1 (Core: collections and items), Part 2 (coordinate reference systems by reference) and Part 3 (Filtering with CQL2). https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/conformance lists the classes this endpoint serves. In QGIS: Layer, Add Layer, Add WFS / OGC API - Features Layer, a new connection with the URL https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/. With curl:

    curl 'https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/collections'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/s3luopgog5nkxcpykwxdvhw22iis5n7e""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/GEOJSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T13:42:41.631988"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Source: City of Helsinki, CC BY 4.0" ] ;
    dct:title "OGC API - Features" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <http://www.opengis.net/doc/IS/ogcapi-features-1/1.0> ;
            dct:title "OGC API - Features" ;
            dcat:endpointURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/geo+json> .

<https://www.etsi.org/deliver/etsi_gs/CIM/001_099/009/> a dct:Standard .

<https://www.hel.fi/> a foaf:Agent ;
    foaf:name "City of Helsinki" .

<https://www.w3.org/TR/json-ld11/> a dct:Standard .

<http://publications.europa.eu/resource/authority/file-type/CSV> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/JSON_LD> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> a dct:MediaTypeOrExtent .

<https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/mcp> a rdfs:Resource .

<https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ngsi-ld/v1/> a rdfs:Resource .

<https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/ogc/features/> a rdfs:Resource .

<http://publications.europa.eu/resource/authority/file-type/JSON> a dct:MediaTypeOrExtent .

<http://www.iana.org/assignments/media-types/text/turtle> a dct:MediaType .

<https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e> a dcat:Dataset ;
    dct:accrualPeriodicity <http://publications.europa.eu/resource/authority/frequency/ANNUAL> ;
    dct:conformsTo <https://www.w3.org/TR/json-ld11/> ;
    dct:description "The city districts and sub-districts with their boundaries. Source: City of Helsinki, CC BY 4.0." ;
    dct:identifier "s3luopgog5nkxcpykwxdvhw22iis5n7e" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:modified "2026-10-19T13:42:41.623105"^^xsd:dateTime ;
    dct:publisher <https://www.hel.fi/> ;
    dct:source <https://kartta.hel.fi/ws/geoserver/avoindata/wfs?service=WFS&version=2.0.0&request=GetFeature&outputFormat=application/json&srsName=EPSG:4326&typeNames=avoindata:Kaupunginosajako>,
        <https://kartta.hel.fi/ws/geoserver/avoindata/wfs?service=WFS&version=2.0.0&request=GetFeature&outputFormat=application/json&srsName=EPSG:4326&typeNames=avoindata:Piirijako_osaalue> ;
    dct:spatial <http://data.europa.eu/nuts/code/FI1B1> ;
    dct:title "City districts — Helsinki" ;
    dcat:contactPoint [ a vcard:Kind,
                vcard:Organization ;
            vcard:fn "joinedcontext" ;
            vcard:hasEmail <mailto:hello@joinedcontext.com> ] ;
    dcat:distribution <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/1686d08c-596d-44e6-b9a6-ae9858435c04>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/3e3a6ece-79af-4716-a131-2be11b81b64c>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/4ec53f74-f873-42d5-8b61-6bcacc1ff297>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/52fce00c-f100-4919-a503-dad076be0630>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/56ad5787-bba5-4cec-8c93-6218f41c4a3a>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/6012aa7e-09d2-442a-9442-770798426f68>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/6be822c8-be0c-48fe-93ba-451b2effd153>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/78632928-a9d5-4759-abf1-41b884e9658f>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/a55b572a-dbd1-4d50-b47d-a67cd4ede1ff>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/a5cdfae8-8321-448a-a8f1-d6116597b942>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/ccb0c87a-cf2e-464a-b092-eeca636e548e>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/e7776b95-0aed-422f-b2fe-236fab4fbddc>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/ee0423a5-9d27-4acb-9b0b-0fa0275cd889>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/f68e37fb-1ae5-4dd4-991d-7daf8eebb1ef>,
        <https://opendata.dev.joinedcontext.com/dataset/b89ac131-9527-4721-8a58-a8a110a7e40e/resource/fea260f7-dbd9-4656-83e8-7dfc8efee00d> ;
    dcat:keyword "delområden",
        "districts",
        "kaupunginosat",
        "osa-alueet",
        "stadsdelar",
        "sub-districts" ;
    dcat:landingPage <https://api.dev.joinedcontext.com/api/endpoint/s3luopgog5nkxcpykwxdvhw22iis5n7e/> ;
    dcat:theme <http://publications.europa.eu/resource/authority/data-theme/REGI> .

<http://www.iana.org/assignments/media-types/application/json> a dct:MediaType .

spdx:checksumAlgorithm_sha256 a spdx:ChecksumAlgorithm .

<http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> a dct:LicenseDocument .