what is the {start time} for {Hikaru Utada} has {spouse} as {Kazuaki Kiriya} ?
When did Hikaru Utada and Kazuaki Kiriya marry?
On what date did Hikaru Utada marry Kazuaki Kiriya?
SELECT ?j WHERE { ?y property:spouse resource:Kazuaki_Kiriya . resource:Hikaru_Utada property:spouse ?y . ?y property:start_time ?j }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q234598> .
?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/Q2528937> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q234598 p:P26 ?s . ?s ps:P26 wd:Q2528937 . ?s pq:P580 ?value}