What is {educated at} and {point in time} of {{Leonid Kantorovich} has {academic degree} as {professor}}
At which point in time was trained Leonid Kantorovich who has an tutorial degree as a professor?
At which point in time was educated Leonid Kantorovich who has an academic degree as a professor?
SELECT ?u ?v WHERE { ?y property:educated_at ?u . ?y property:academic_degree resource:professor . ?y property:point_in_time ?v . resource:Leonid_Kantorovich property:academic_degree ?y }
select distinct ?value1 ?value2 where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q107441> . ?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/Q121594>. ?statement <http://www.wikidata.org/entity/P580> ?value1 . ?statement <http://www.wikidata.org/entity/P2842> ?value2 } 
SELECT ?value1 ?value2 WHERE { wd:Q107441 p:P512 ?s . ?s ps:P512 wd:Q121594 . ?s pq:P69 ?value1 . ?s pq:P585 ?value2 }