TASK DEFINITION: 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.
PROBLEM: Category: ANIMAL PLANET?
Clue: In gymnastics, it's safe to vault over; its body is upholstered

SOLUTION: horse

PROBLEM: Category: MR. BODY
Clue: Fed by the hepatic portal veins, it weighs about a pound more in men than in women

SOLUTION: liver

PROBLEM: Category: CALL ME SHIRLEY
Clue: Dramatist James Shirley moved to Dublin in 1636 after parliament closed Britain's theaters as a precaution against this

SOLUTION:
the bubonic plague