Question: What opera was composed by Pyotr Ilyich Tchaikovsky?
Paraphrase: What musical drama was composed by Pyotr Ilyich Tchaikovsky?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P86 wd:Q7315 . ?sbj wdt:P31 wd:Q1344 } 
Answer: The Queen of Spades, Cherevichki, The Enchantress, Vakula the Smith, The Maid of Orleans, Iolanta, Mazeppa, The Oprichnik, The Voyevoda, Undina, The Queen of Spades, Eugene Onegin