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

<http://data.europa.eu/nuts/code/SK031> a dct:Location .

<http://publications.europa.eu/resource/authority/data-theme/ENVI> a skos:Concept ;
    skos:prefLabel "Environment"@en .

<http://publications.europa.eu/resource/authority/data-theme/HEAL> a skos:Concept ;
    skos:prefLabel "Health"@en .

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

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

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

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

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

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

<https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/> a foaf:Document .

<https://dev.joinedcontext.com/> a foaf:Agent ;
    foaf:name "Projekt Žilina, platforma joinedcontext" .

<https://eeadmz1batchservice02.blob.core.windows.net/airquality-p/SK/SPO-SK0020A_00005_100.parquet> a dcat:Dataset ;
    dct:description "Aktuálne hodinové údaje stanice Žilina, súbory Parquet podľa vzorkovacieho bodu, CC BY 4.0." ;
    dct:title "Kvalita ovzdušia, stanica SK0020A (EEA, E2a)" .

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

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/004b29e7-cfed-4187-8f0e-c77ef7e6e128> 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/odata/v4/. In Power BI: Get data, OData feed, the same URL. With curl:

    curl 'https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/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/rhnhewwotdngtrsb7gnzpj63ysnkutwl""" ;
    dct:issued "2026-10-19T00:22:26.234609"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211765"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, CC BY 4.0" ] ;
    dct:title "OData v4" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/odata/v4/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/0ff66d95-4d75-4a14-9a39-49fea6e340ad> a dcat:Distribution ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-10-16T14:22:19.884800"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-18T23:24:51.485290"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, CC BY 4.0" ] ;
    dct:title "AirQualityObserved" ;
    dcat:accessURL <https://opendata.dev.joinedcontext.com/datastore/dump/0ff66d95-4d75-4a14-9a39-49fea6e340ad> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/3a0f1d94-cf4d-490b-bafa-2bf9d5101b4f> 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/file.csv'

Open to anyone, with no sign-in.""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-10-19T00:22:26.234606"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211575"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, CC BY 4.0" ] ;
    dct:title "CSV" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/file.csv> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/csv> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/865d2b96-12a6-45e4-892b-db637b047249> 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl. 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":{"zilina-ovzdusie":{"type":"http","url":"https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/mcp"}}}
""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-10-19T00:22:26.234610"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211822"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/mcp> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/mcp> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/8f2e59fa-3c96-4b4c-87eb-37b6923685f6> 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 "2026-10-19T00:22:26.234611"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211877"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, CC BY 4.0" ] ;
    dct:title "Schema artifacts" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/schema/index.json> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/b67e3ee9-d0ec-4b0c-943a-96843ca1146b> 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 AirQualityObserved entities:

    curl -H 'Accept: application/ld+json' 'https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ngsi-ld/v1/entities?type=AirQualityObserved&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/rhnhewwotdngtrsb7gnzpj63ysnkutwl""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON_LD> ;
    dct:issued "2026-10-19T00:22:26.234601"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211458"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ngsi-ld/v1/> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ngsi-ld/v1/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/c8a39d19-1c79-4af7-85b1-3363faa2acf4> 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ogc/features/. With curl:

    curl 'https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/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/rhnhewwotdngtrsb7gnzpj63ysnkutwl""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/GEOJSON> ;
    dct:issued "2026-10-19T00:22:26.234608"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211702"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ogc/features/> ;
            dcat:servesDataset <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e> ] ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ogc/features/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/geo+json> .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/dcfb1798-11b1-4717-bf1e-e1cf3cf85b0b> 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/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ws'
    {"metadata":{"x-op":"x-subscribe","x-id":"s1"},"body":{"type":"Subscription","entities":[{"type":"AirQualityObserved"}]}}

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 "2026-10-19T00:22:26.234607"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-19T00:22:26.211640"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Zdroj: Európska environmentálna agentúra, údaje SHMÚ, CC BY 4.0" ] ;
    dct:title "Live updates over WebSocket" ;
    dcat:accessURL <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ws> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

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

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

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

<https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/mcp> a rdfs:Resource .

<https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ngsi-ld/v1/> a rdfs:Resource .

<https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/ogc/features/> a rdfs:Resource .

<https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e> a dcat:Dataset ;
    dct:accrualPeriodicity <http://publications.europa.eu/resource/authority/frequency/HOURLY> ;
    dct:description "Hodinové merania PM10, PM2,5, NO2, O3 a CO na stanici SK0020A. Zdroj: Európska environmentálna agentúra (údaje SHMÚ), CC BY 4.0." ;
    dct:identifier "rhnhewwotdngtrsb7gnzpj63ysnkutwl" ;
    dct:issued "2026-10-16T14:22:19.384975"^^xsd:dateTime ;
    dct:modified "2026-10-19T00:22:26.204769"^^xsd:dateTime ;
    dct:publisher <https://dev.joinedcontext.com/> ;
    dct:source <https://eeadmz1batchservice02.blob.core.windows.net/airquality-p/SK/SPO-SK0020A_00005_100.parquet> ;
    dct:spatial <http://data.europa.eu/nuts/code/SK031> ;
    dct:title "Kvalita ovzdušia — Žilina" ;
    dcat:contactPoint [ a vcard:Kind,
                vcard:Organization ;
            vcard:fn "joinedcontext platform" ;
            vcard:hasEmail <mailto:hello@joinedcontext.com> ] ;
    dcat:distribution <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/004b29e7-cfed-4187-8f0e-c77ef7e6e128>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/0ff66d95-4d75-4a14-9a39-49fea6e340ad>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/3a0f1d94-cf4d-490b-bafa-2bf9d5101b4f>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/865d2b96-12a6-45e4-892b-db637b047249>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/8f2e59fa-3c96-4b4c-87eb-37b6923685f6>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/b67e3ee9-d0ec-4b0c-943a-96843ca1146b>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/c8a39d19-1c79-4af7-85b1-3363faa2acf4>,
        <https://opendata.dev.joinedcontext.com/dataset/835a2053-e1e1-4f06-ae62-c12fd7bd0f1e/resource/dcfb1798-11b1-4717-bf1e-e1cf3cf85b0b> ;
    dcat:keyword "NO2",
        "PM10",
        "PM2 5",
        "PM2.5",
        "air quality",
        "kvalita ovzdušia",
        "Žilina" ;
    dcat:landingPage <https://api.dev.joinedcontext.com/api/endpoint/rhnhewwotdngtrsb7gnzpj63ysnkutwl/> ;
    dcat:theme <http://publications.europa.eu/resource/authority/data-theme/ENVI>,
        <http://publications.europa.eu/resource/authority/data-theme/HEAL> ;
    prov:wasGeneratedBy [ a prov:Activity ;
            rdfs:label "pipeline ovzdusie-pm10" ] .

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

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