What is {end time} and {start time} of {{Gore Vidal} has {partner} as {Howard Austen}}
When did Gore Vidal's relationship with Howard Austen begin?
when did the relationship between Gore Vidal and Howard Austen start?
SELECT ?i ?o WHERE { ?g property:end_time ?i . ?g property:unmarried_partner resource:Howard_Austen . ?g property:start_time ?o . resource:Gore_Vidal property:unmarried_partner ?g }
select distinct ?value1 ?value2 where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q167821> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P451> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q17309157>. ?statement <http://www.wikidata.org/entity/P580> ?value1 . ?statement <http://www.wikidata.org/entity/P2842> ?value2 } 
SELECT ?value1 ?value2 WHERE { wd:Q167821 p:P451 ?s . ?s ps:P451 wd:Q17309157 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }