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 consistency, answers should be in all lower cased letters.
question:
Category: "PH" DELIGHTS 
Clue: Appropriately, Paul Nurse shared the 2001 Nobel Prize in this category
answer:
physiology


question:
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
answer:
the great wall of china


question:
Category: GOING WIRELESS 
Clue: In 1946 this detective's 2-way wrist radio made its debut in the funnies
answer:

dick tracy