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 consistency, answers should be in all lower cased letters.
PROBLEM: 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

SOLUTION: the great wall of china

PROBLEM: Category: BUSINESS & INDUSTRY 
Clue: Holly Farms & Tasty Bird are brand names of this Arkansas-based poultry producer

SOLUTION: tyson foods

PROBLEM: Category: THE MAIN ORGAN AFFECTED 
Clue: Pleurisy

SOLUTION:
the lungs