Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Ex Input:
The Hubbard Medal, whose past winners include Sir Ernest Shackleton, Charles Lindbergh, and the Apollo 11 crew, is awarded by which society?

Ex Output:
national geographic society


Ex Input:
In Greek mythology who was the mother of Zeus, Poseidon and Hades?

Ex Output:
rhea


Ex Input:
Which letter of the Greek alphabet, when written as a capital, looks like our letter P?

Ex Output:

rho