query-c7d522a1b8b01ca8ec8c5da183c091ed

Single pages reference

Use at

https://query.wikidata.org/sparql

PREFIX prov: <http://www.w3.org/ns/prov#>
PREFIX pr: <http://www.wikidata.org/prop/reference/>
SELECT DISTINCT ?item ?statement ?ref1 WHERE {
  {
    ?item ?some_prop ?statement .
    ?statement prov:wasDerivedFrom ?ref1 .
    ?ref1 pr:P304 ?pages.
    OPTIONAL {?ref1 ?a ?b . FILTER (?a != pr:P304)}
    FILTER (!BOUND(?b))
  }
} limit 1000

Query found at

https://www.wikidata.org/wiki/User:Difool/maintenance

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?a") v1("?b") v3("?item"):::projected v7("?pages") v6("?ref1"):::projected v4("?some_prop") v5("?statement"):::projected f0[["not bound(?b)"]] f0 --> v1 v3 -->v4--> v5 v5 --"prov:wasDerivedFrom"--> v6 v6 --"pr:P304"--> v7 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v6 -->v2--> v1 end