what is the {point in time} for {Robert Musil} has {academic degree} as {doctoral degree} ?
Robert Musil earned his Doctorate in what year?
When did Robert Musil earn his doctoral degree?
SELECT ?z WHERE { ?y property:point_in_time ?z . ?y property:academic_degree resource:doctorate . resource:Robert_Musil property:academic_degree ?y }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q78487> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P512> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q849697> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q78487 p:P512 ?s . ?s ps:P512 wd:Q849697 . ?s pq:P585 ?value}