what is the {start time} for {David Susskind} has {spouse} as {Joyce Davidson} ?
What was the date of David Susskind and Joyce Davidson's wedding?
When did David Susskind and Joyce Davidson marry?
SELECT ?o WHERE { ?d property:spouse resource:Joyce_Davidson . resource:David_Susskind property:spouse ?d . ?d property:start_time ?o }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q4408937> .
?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/Q6297452> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q4408937 p:P26 ?s . ?s ps:P26 wd:Q6297452 . ?s pq:P580 ?value}