instruction:
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: CLASSICAL MUSIC 
Clue: Mendelssohn's "Songs without Words" were once the most popular pieces for this instrument
answer:
piano


question:
Category: AMERICAN HISTORY 
Clue: On June 21, 1982 he was found not guilty by reason of insanity in the shooting of President Reagan
answer:
john hinckley


question:
Category: AMERICANA WORMS 
Clue: This American's poem "The Conqueror Worm" contains the line "It writhes!  It writhes!"
answer:

edgar allan poe