what is the {end time} for {Leone Battista Alberti} has {work location} as {Ferrara} ?
When does Leone Battista Alberti finish at his location of employment at ferrara
SELECT ?value WHERE { wd:Q182046 p:P937 ?s . ?s ps:P937 wd:Q13362 . ?s pq:P582 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q182046> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P937> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q13362> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

Leone Battista Alberti finished at his location of employment at ferrara at this time?