what is the {start time} for {Ferenc Molnár} has {spouse} as {Lili Darvas} ?
When did Lili Darvas and Ferenc Molnar get married?
When did Lili Darvas become the spouse of Ferenc Molnár ?
SELECT ?f WHERE { resource:Ferenc_Molnár property:spouse ?v . ?v property:spouse resource:Lili_Darvas . ?v property:start_time ?f }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q296809> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P26> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q762952> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q296809 p:P26 ?s . ?s ps:P26 wd:Q762952 . ?s pq:P580 ?value}