query-9d3e2d17a29eb1c84ba6d393e459edd7

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 ?item ?itemLabel ?coord ?item2 ?item2Label ?coord2 ?dist
{

{
  SELECT ?item ?coord ?item2 ?coord2 ?dist
  {

{
  SELECT DISTINCT ?item (SAMPLE(?coord_) AS ?coord)
  {
    ?item wdt:P31 / wdt:P279 * wd:Q12323 . # Instance of Dam or subclass
    ?item wdt:P17 wd:Q17 . # In Japan
    ?item wdt:P625 ?coord_ .
    BIND (geof:longitude(?coord_) AS ?long)
    FILTER (?long > 136)
    FILTER (?long < 138)
  }
  GROUP BY ?item
}    {
      SELECT (?item AS ?item2) (?coord AS ?coord2) { 
{
  SELECT DISTINCT ?item (SAMPLE(?coord_) AS ?coord)
  {
    ?item wdt:P31 / wdt:P279 * wd:Q12323 . # Instance of Dam or subclass
    ?item wdt:P17 wd:Q17 . # In Japan
    ?item wdt:P625 ?coord_ .
    BIND (geof:longitude(?coord_) AS ?long)
    FILTER (?long > 136)
    FILTER (?long < 138)
  }
  GROUP BY ?item
}}
    }
    FILTER (STR(?item) < STR(?item2))
    BIND(geof:distance(?coord, ?coord2) as ?dist)
    FILTER (?dist <= 10)
  }
}  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en,ja" }
}
ORDER BY ?dist

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v7("?coord"):::projected v7("?coord2"):::projected v5("?coord_") v8("?dist"):::projected v2("?item"):::projected v7("?item2"):::projected v7("?long") a1((" ")) a2((" ")) c13(["#91;AUTO_LANGUAGE#93;,en,ja"]):::literal c8(["wd:Q17"]):::iri c11(["bd:serviceParam"]):::iri c6(["wd:Q12323"]):::iri f0[["?dist <= '10^^xsd:integer'"]] f0 --> v8 f1[["str(?item) < str(?item2)"]] f1 --> v2 f1 --> v7 f2[["?long < '138^^xsd:integer'"]] f2 --> v7 f3[["?long > '136^^xsd:integer'"]] f3 --> v7 v2 --"wdt:P31"--> a1 a1 --"wdt:P279"--> c6 v2 --"wdt:P17"--> c8 v2 --"wdt:P625"--> v5 bind4[/"http://www.opengis.net/def/function/geosparql/longitude(?coord_)"/] v5 --o bind4 bind4 --as--o v7 bind6[/"sample(?coord_)"/] v5 --o bind6 bind6 --as--o v7 f7[["?long < '138^^xsd:integer'"]] f7 --> v7 f8[["?long > '136^^xsd:integer'"]] f8 --> v7 v2 --"wdt:P31"--> a2 a2 --"wdt:P279"--> c6 v2 --"wdt:P17"--> c8 v2 --"wdt:P625"--> v5 bind9[/"http://www.opengis.net/def/function/geosparql/longitude(?coord_)"/] v5 --o bind9 bind9 --as--o v7 bind11[/"sample(?coord_)"/] v5 --o bind11 bind11 --as--o v7 bind12[/"?item"/] v2 --o bind12 bind12 --as--o v7 bind13[/"?coord"/] v7 --o bind13 bind13 --as--o v7 bind14[/"http://www.opengis.net/def/function/geosparql/distance(?coord,?coord2)"/] v7 --o bind14 v7 --o bind14 bind14 --as--o v8 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c11 --"wikibase:language"--> c13 end