query-22002c5f5bc295ecf0908d20739697ac

rq turtle/ttl

Qlever federated

Use at

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
select * {
  # fetch results from qlever
  service <https://qlever.cs.uni-freiburg.de/api/wikidata> {
    ?a wdt:P279+ ?b.
    ?b wdt:P279 ?a.
  }

  # tell blazegraph to not be stupid and fetch results from qlever first


  # repeat query on the subset returned from qlever to filter out anything that's been fixed
  ?a wdt:P279+ ?b.
  ?b wdt:P279 ?a.
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?a"):::projected v2("?b"):::projected subgraph s1["https://qlever.cs.uni-freiburg.de/api/wikidata"] style s1 stroke-width:4px; v1 --"wdt:P279"--> v2 v2 --"wdt:P279"--> v1 end v1 --"wdt:P279"--> v2 v2 --"wdt:P279"--> v1