Question: When did Pyotr Ilyich Tchaikovsky leave the Saint Petersburg Conservatory?
Paraphrase: On what date did Pyortr Ilyich Tchaikovsky depart from the Saint Petersburg Conservatory?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q7315 p:P69 ?s . ?s ps:P69 wd:Q178416 . ?s pq:P582 ?value}