query-7fba0281eceb5882e2380c5403ef4a6d

rq turtle/ttl

Propertiesinstance of (P31)subclass of (P279)twinned administrative body (P190)country (P17)coordinate location (P625)

Use at

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX geof: <http://www.opengis.net/def/function/geosparql/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?city ?cityLabel ?sister_city ?sister_cityLabel ?sister_city_countryLabel ?city_coords_ ?sister_city_coords_ ?distance
WHERE {
   {
  SELECT ?city ?sister_city (SAMPLE(?city_coords) AS ?city_coords_) (SAMPLE(?sister_city_coords) AS ?sister_city_coords_) ?sister_city_country WHERE {
    ?city wdt:P31/wdt:P279* wd:Q515;
          wdt:P190 ?sister_city;
          wdt:P17 wd:Q183.
    OPTIONAL { ?city wdt:P625 ?city_coords. }
    OPTIONAL { ?sister_city wdt:P625 ?sister_city_coords. }
    OPTIONAL { ?sister_city wdt:P17 ?sister_city_country. }
  }
  GROUP BY ?city ?sister_city ?sister_city_country
}
  BIND(geof:distance(?city_coords_, ?sister_city_coords_) AS ?distance)
  SERVICE wikibase:label { bd:serviceParam wikibase:language "de,en". }
}
ORDER BY ?distance

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?city"):::projected v4("?city_coords") v7("?city_coords_"):::projected v9("?distance"):::projected v3("?sister_city"):::projected v5("?sister_city_coords") v8("?sister_city_coords_"):::projected v6("?sister_city_country") a1((" ")) c9(["bd:serviceParam"]):::iri c3(["wd:Q515"]):::iri c6(["wd:Q183"]):::iri c11(["de,en"]):::literal v2 --"wdt:P31"--> a1 a1 --"wdt:P279"--> c3 v2 --"wdt:P190"--> v3 v2 --"wdt:P17"--> c6 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v2 -."wdt:P625".-> v4 end subgraph optional1["(optional)"] style optional1 fill:#bbf,stroke-dasharray: 5 5; v3 -."wdt:P625".-> v5 end subgraph optional2["(optional)"] style optional2 fill:#bbf,stroke-dasharray: 5 5; v3 -."wdt:P17".-> v6 end bind2[/"sample(?city_coords)"/] v4 --o bind2 bind2 --as--o v7 bind3[/"sample(?sister_city_coords)"/] v5 --o bind3 bind3 --as--o v8 bind4[/"http://www.opengis.net/def/function/geosparql/distance(?city_coords_,?sister_city_coords_)"/] v7 --o bind4 v8 --o bind4 bind4 --as--o v9 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c9 --"wikibase:language"--> c11 end