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.

Example Input: Category: PRESIDENTIAL FACTS 
Clue: In 1919 this trustbuster's last words were "Please put out the light"
Example Output: theodore roosevelt

Example Input: Category: REALLY BIG 
Clue: Longer than 2 football fields, it was launched at Friedrichshafen, Germany in 1936
Example Output: the hindenburg

Example Input: Category: PHYSICS 
Clue: An "electric eye" alarm detects a break in the beam of light not with a simple "electric" cell but with this type of cell
Example Output:
photoelectric