voiD store

Example SPARQL queries

To find endpoints which may contain data about a given URI, use the endpoint lookup service. Alternatively, try some of the queries below...

Which datasets contain knowledge about geographic locations? [see results]

    SELECT DISTINCT ?dataset
    WHERE {
      ?dataset a void:Dataset .
      ?dataset dcterms:subject <http://dbpedia.org/resource/Location_(geography)> .
    }

What ontologies are used in the portion of the LOD cloud for which we have voiD descriptions? [see results]

    SELECT DISTINCT ?vocabulary
    WHERE {
      ?dataset a void:Dataset .
      ?dataset void:vocabulary ?vocabulary
    }

What SPARQL endpoints are available? [see results]

    SELECT DISTINCT ?endpoint
    WHERE {
      ?dataset a void:Dataset .
      ?dataset void:sparqlEndpoint ?endpoint
    }

Which datasets link to dbpedia? [see results]

    SELECT DISTINCT ?dataset
    WHERE {
      ?dataset a void:Dataset .
      ?dataset void:subset ?s .
      ?s void:objectsTarget <http://dbpedia.org/resource/void>
    }