what is the {start time} for {Carly Fiorina} has {spouse} as {Frank Fiorina} ?
On what date were Carly and Frank Fiorina married?
When did Carly Fiorina and Frank Fiorina get married
SELECT ?g WHERE { ?u property:spouse resource:Frank_Fiorina . ?u property:start_time ?g . resource:Carly_Fiorina property:spouse ?u }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q256380> .
?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/Q20165781> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q256380 p:P26 ?s . ?s ps:P26 wd:Q20165781 . ?s pq:P580 ?value}