what is the {start time} for {Roscosmos State Corporation} has {manager/director} as {Yuri Koptev} ?
When did Yuri Koptev serve as manager and director for R.S.C.?
When did Yuri Koptev start as the manager and director of the Roscosmos State Corporation?
SELECT ?c WHERE { ?x property:director_/_manager resource:Yuri_Koptev . resource:Roscosmos_State_Corporation property:director_/_manager ?x . ?x property:start_time ?c }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q190795> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1037> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q2895091> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q190795 p:P1037 ?s . ?s ps:P1037 wd:Q2895091 . ?s pq:P580 ?value}