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: REALLY BIG 
Clue: Longer than 2 football fields, it was launched at Friedrichshafen, Germany in 1936

A: the hindenburg
****
Q: Category: MR. ROBINSON 
Clue: Walker Smith used this name as a professional boxer

A: sugar ray robinson
****
Q: Category: ANATOMICALLY CORRECT 
Clue: It's the thin membrane that lines the outside of the lungs

A:
the pleura
****