what is the {start time} for {Jadwiga of Poland} has {spouse} as {Władysław II Jagiełło} ?
jadwiga married wladyslaw ii jagiello in what year
When was Jadwiga of Poland married to Wladyslaw II Jagiello?
SELECT ?y WHERE { resource:Jadwiga_I_of_Poland property:spouse ?s . ?s property:start_time ?y . ?s property:spouse resource:Władysław_II_Jagiełło }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q53449> .
?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/Q54049> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q53449 p:P26 ?s . ?s ps:P26 wd:Q54049 . ?s pq:P580 ?value}