What is {spouse} of {Catherine of Medici} that is {start time} is {1533-0-0} ?
Catherine of Medici was married in 1535, to whom?
Who was the spouse of Catherine of Medici in 1533?
SELECT ?o WHERE { FILTER ( CONTAINS ( YEAR ( ?c ) , '1533' ) ) . ?q property:start_time ?c . resource:Catherine_de'_Medici property:spouse ?q . ?q property:spouse ?o }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q131552> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1533-0-0>
} 

SELECT ?obj WHERE { wd:Q131552 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1533')) }