what is the {start time} for {Ismail Kadare} has {spouse} as {Helena Kadare} ?
On what date did Ismail Kadare and Helena Kadare marry?
When did Ismail Kadare and Helena Kadare marry?
SELECT ?f WHERE { resource:Ismail_Kadare property:spouse ?i . ?i property:start_time ?f . ?i property:spouse resource:Helena_Kadare }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q179695> .
?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/Q3301387> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q179695 p:P26 ?s . ?s ps:P26 wd:Q3301387 . ?s pq:P580 ?value}