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.
--------
Question: Category: AMERICAN POETRY
Clue: Walt Whitman called this "the beautiful uncut hair of graves"

Answer: grass

Question: Category: U.S. PRESIDENTS
Clue: Adventurous 26th president, he was 1st to ride in an automobile & an airplane

Answer: theodore roosevelt

Question: Category: THEATRE
Clue: In 1999 Del Close willed this to the Goodman Theatre in Chicago to be used in Act 5, Scene 1 of "Hamlet"

Answer:
his own skull