What is {academic degree} of {Abraham Maslow} that is {point in time} is {1931-0-0} ?
In 1931 Abraham Maslow earned what diploma?
What academic degree was obtained by Abraham Maslow in 1931?
SELECT ?i WHERE { ?y property:academic_degree ?i . resource:Abraham_Maslow property:academic_degree ?y . FILTER ( CONTAINS ( YEAR ( ?e ) , '1931' ) ) . ?y property:point_in_time ?e }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q23357> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P585> <1931-0-0>
} 

SELECT ?obj WHERE { wd:Q23357 p:P512 ?s . ?s ps:P512 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1931')) }