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.

Ex Input:
Category: U.S. CITIES 
Clue: Its largest airport is named for a World War II hero; its second largest, for a World War II battle

Ex Output:
chicago


Ex Input:
Category: THE TITANIC 
Clue: When the RMS Titanic sank in 1912, its cargo included more than 7 million pieces of this, in some 3,400 sacks

Ex Output:
mail


Ex Input:
Category: WORDS 
Clue: Once luring men to danger, now one warns of it

Ex Output:

a siren