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.

Ex Input:
Category: CLEANING UP 
Clue: In 1898 Caleb Johnson sold this soap named for 2 types of oil used to make it; later the co. merged with Colgate

Ex Output:
palmolive


Ex Input:
Category: PICTURES AT AN EXHIBITION 
Clue: His 1960s works include "I Know How You Must Feel, Brad!" & "As I Opened Fire..."

Ex Output:
roy lichtenstein


Ex Input:
Category: SCIENCE & NATURE 
Clue: Oddly, this property is lower in solid than in liquid water, so ice floats

Ex Output:

density