What is {educated at} of {Melinda Gates} that is {point in time} is {1982-1-1} ?
January 1st, 1982, where was Melinda Gates educated?
Where was Melinda Gates being educated on January 1st, 1982?
SELECT ?k WHERE { ?z property:point_in_time ?u . FILTER ( CONTAINS ( YEAR ( ?u ) , '1982' ) ) . resource:Melinda_Gates property:educated_at ?z . ?z property:educated_at ?k }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q463877> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P69> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P585> <1982-1-1>
} 

SELECT ?obj WHERE { wd:Q463877 p:P69 ?s . ?s ps:P69 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1982')) }