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

SOLUTION: british airways

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

SOLUTION: the hindenburg

PROBLEM: Category: CAR MEN 
Clue: Charles Kettering invented an electric ignition & this device, which ended the need for hand-cranking

SOLUTION:
starter