instruction:
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.
question:
Category: WHAT SHOULD I "DU"? 
Clue: A philosophical system that seeks to explain all phenomena in terms of 2 distinct principles
answer:
dualism


question:
Category: JORDAN 
Clue: Jordan lost the city of Jerusalem & the territory known as the West Bank during a war in this year
answer:
1967


question:
Category: DESTINATION: PLUTO 
Clue: In 1930 he discovered Pluto; in 2006 some of his ashes were headed there aboard NASA's New Horizons mission
answer:

clyde tombaugh