what is the {start time} for {Alexander Schneider} has {spouse} as {Geraldine Page} ?
When was Geraldine Page the wife of Alexander Schneider?
When was Geraldine Page the spouse of Alexander Schneider?
SELECT ?w WHERE { ?x property:start_time ?w . ?x property:spouse resource:Geraldine_Page . resource:Alexander_Schneider property:spouse ?x }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1385081> .
?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/Q228650> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q1385081 p:P26 ?s . ?s ps:P26 wd:Q228650 . ?s pq:P580 ?value}