instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In America, as what was Bill Shoemaker famous?
answer:
bill shoemaker

question:
From which musical did the song 'Chim Chim Cheree' come?
answer:
chim chim cher-ee

question:
Who wrote the Ballad of Reading Gaol in 1898?
answer:
the ballad of reading gaol