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: WORLD CITIES 
Clue: Intercontinental flights to Scotland land at Prestwick Airport just outside this city

SOLUTION: glasgow

PROBLEM: Category: EPIGRAPHS 
Clue: For "The Razor's Edge", he chose the apt "The sharp edge of a razor is difficult to pass over"

SOLUTION: somerset maugham

PROBLEM: Category: TECHNOLOGY 
Clue: If you see the following symbol at the start of a TV show, it means this service is available:

SOLUTION:
closed captioning