query-d2098ec00a22ecec825b4f963565f1db

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 distinct ?person ?personLabel ?positionLabel ?start_date ?twitter_username where
{
  ?person p:P39 ?positionStatement . 
  ?positionStatement ps:P39 ?position .
  { ?position wdt:P31 wd:Q18115939 . } union { ?position wdt:P31 wd:Q56760832 } . 
  ?positionStatement pq:P580 ?start_date .
  filter not exists {?positionStatement pq:P582 ?end_date . }
  ?person wdt:P2002 ?twitter_username .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
} order by ?positionLabel

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v3("?end_date") v4("?person"):::projected v5("?position") v1("?positionLabel"):::projected v2("?positionStatement") v6("?start_date"):::projected v7("?twitter_username"):::projected c5(["wd:Q18115939"]):::iri c10(["bd:serviceParam"]):::iri c6(["wd:Q56760832"]):::iri c12(["#91;AUTO_LANGUAGE#93;,en"]):::literal f0[["not "]] subgraph f0e0["Exists Clause"] e0v1 --"p:qualifier/P582"--> e0v2 e0v2("?end_date"):::projected e0v1("?positionStatement"):::projected end f0--EXISTS--> f0e0 f0 --> v2 f0 --> c1 f0 --> v3 v2 --"p:qualifier/P582"--> v3 v4 --"p:P39"--> v2 v2 --"p:statement/P39"--> v5 subgraph union0[" Union "] subgraph union0l[" "] style union0l fill:#abf,stroke-dasharray: 3 3; v5 --"p:direct/P31"--> c6 end subgraph union0r[" "] style union0r fill:#abf,stroke-dasharray: 3 3; v5 --"p:direct/P31"--> c5 end union0r <== or ==> union0l end v2 --"p:qualifier/P580"--> v6 v4 --"p:direct/P2002"--> v7 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c10 --"wikibase:language"--> c12 end