what is the {end time} for {Porfirio Rubirosa} has {spouse} as {Barbara Hutton} ?
At what time did Porfirio Rubirosa divorce Barbara Hutton?
When did Porfirio Rubirosa divorce Barbara Hutton?
SELECT ?l WHERE { resource:Porfirio_Rubirosa property:spouse ?b . ?b property:spouse resource:Barbara_Hutton . ?b property:end_time ?l }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1349488> .
?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/Q255620> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

SELECT ?value WHERE { wd:Q1349488 p:P26 ?s . ?s ps:P26 wd:Q255620 . ?s pq:P582 ?value}