query-b2fbf5a751b9f28a6c8b361b44928d58

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?item ?itemLabel (YEAR(?time) as ?date) ?viaf ?ol WHERE {
  ?item p:P166 ?node .
  ?node ps:P166 wd:Q2793926
  OPTIONAL{
    ?node pq:P585 ?time
  }
  OPTIONAL{
    ?item wdt:P214 ?viaf1
  }  
  OPTIONAL{
    ?item wdt:P648 ?ol1
  }
  BIND(IF(BOUND(?ol1), ?ol1, 'no OL identifier') AS ?ol)
  BIND(IF(BOUND(?viaf1), ?viaf1, 'no VIAF identifier') AS ?viaf)
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
} ORDER BY ?time

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v8("?date") v2("?item"):::projected v3("?node") v6("?ol"):::projected v5("?ol1") v1("?time"):::projected v7("?viaf"):::projected v4("?viaf1") c3(["wd:Q2793926"]):::iri c8(["bd:serviceParam"]):::iri c10(["en"]):::literal v2 --"p:P166"--> v3 v3 --"p:statement/P166"--> c3 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."p:qualifier/P585".-> v1 end subgraph optional1["(optional)"] style optional1 fill:#bbf,stroke-dasharray: 5 5; v2 -."p:direct/P214".-> v4 end subgraph optional2["(optional)"] style optional2 fill:#bbf,stroke-dasharray: 5 5; v2 -."p:direct/P648".-> v5 end bind0[/"if(bound(?ol1),?ol1,'no OL identifier')"/] v5 --o bind0 bind0 --as--o v6 bind1[/"if(bound(?viaf1),?viaf1,'no VIAF identifier')"/] v4 --o bind1 bind1 --as--o v7 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c8 --"wikibase:language"--> c10 end bind2[/"year-from-dateTime(?time)"/] v1 --o bind2 bind2 --as--o v8