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.
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Question: Category: ANIMALS 
Clue: Odobenus, the genus name of this animal, comes from the Greek for "one who walks with his teeth"

Answer: walrus


Question: Category: U.S. HISTORY 
Clue: He was the commanding Union general at Bentonville, site of the last major Confederate offensive

Answer: william tecumseh sherman


Question: Category: FROM THE GREEK 
Clue: The word for a song element you won't find in instrumentals comes from the name of this instrument

Answer:
a lyre