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: CLEANING UP 
Clue: In 1887 Johnson & Johnson was incorporated in part to improve upon this man's study of antisepsis

SOLUTION: lister

PROBLEM: Category: FAMOUS FOLKS 
Clue: During WWII this Geodesic Dome inventor headed mechanical engineering for the Board of Economic Warfare

SOLUTION: buckminster fuller

PROBLEM: Category: COSMOPOLITAN 
Clue: In this city you can walk a flight of 137 steps up to Trinita Dei Monti, a 15th C. French church built by Charles VIII

SOLUTION:
rome