Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
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Question: What word is used in mathematics to mean if and only if?

Answer: if and only if


Question: Which 2001 musical film based on the Orphean myth and on Giuseppe Verdi's opera La Traviata stars Ewan McGregor and Nicole Kidman?

Answer: moulin rouge!


Question: The novels 'The Long Goodbye' and 'Farewell, My Lovely' feature which fictional detective?

Answer:
philip marlowe