What is {discovered} of {plays} of {Émile Waldteufel} ?
Who found the plays of Emile Walteufel?
Who discovered the plays of Emile Walteufel?
SELECT ?l WHERE { ?m property:time_of_discovery_or_invention ?l . resource:Émile_Waldteufel property:instrument ?m }
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SELECT ?answer WHERE { wd:Q286616 wdt:P1303 ?X . ?X wdt:P575 ?answer}
1700-01-01T00:00:00Z