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 consistency, answers should be in all lower cased letters.

Category: IT'S NOT SO 
Clue: Though 4,500 miles long, it's not visible from space, as its materials are similar in color to the surrounding soil
the great wall of china

Category: NOW THAT'S INVENTIVE! 
Clue: Famous for his jet, he also invented the automobile radio for the company that became Motorola
lear

Category: NEW YORK ON FILM 
Clue: All of Manhattan has become a maximum-security prison in this futuristic Kurt Russell thriller

escape from new york