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.

Input: Consider Input: Category: AIRLINE AD SLOGANS 
Clue: "The world's favourite airline"

Output: british airways


Input: Consider Input: Category: HALOGENS 
Clue: A reddish liquid, this halogen is often used to make sedatives & was once used to make EDB, an additive in lead gasoline

Output: bromine


Input: Consider Input: Category: BRIT BITS & PIECES 
Clue: The BBC has been broadcasting this bell's chimes since 1923


Output: big ben