You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: "WORLD" BOOK 
Clue: John Irving established his reputation with this 1978 book about the life of a novelist

A: "the world according to garp"
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Q: Category: PLAYWRIGHTS 
Clue: In 1979 this author of "Streamers" married Jill Clayburgh

A: david rabe
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Q: Category: OPERA 
Clue: This title character is sent to fetch Isolde, his uncle King Mark's intended bride

A:
tristan
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