what is the {start time} for {Paul Hindemith} has {educated at} as {Hoch Conservatory} ?
Hoch Conservatory accepted Paul Hindemith as a student what year?
When did Paul Hindemith begin studying at Hoch Conservatory?
SELECT ?x WHERE { ?u property:start_time ?x . resource:Paul_Hindemith property:educated_at ?u . ?u property:educated_at resource:Hoch_Conservatory }
select distinct ?value  where {
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?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> <http://wikidata.dbpedia.org/resource/Q466029> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q57244 p:P69 ?s . ?s ps:P69 wd:Q466029 . ?s pq:P580 ?value}