what is the {start time} for {Philipp Kirkorov} has {educated at} as {Gnessin Russian Academy of Music} ?
Philipp Kirkorov studied at Gnessin Russian Academy of Music in what years?
When did Philipp Kirkorov begin his education at the Gnessin Russian Academy of Music?
SELECT ?z WHERE { resource:Philipp_Kirkorov property:educated_at ?k . ?k property:start_time ?z . ?k property:educated_at resource:Gnessin_Russian_Academy_of_Music }
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