instruction:
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.
question:
The 2010 charity single 'Helping Haiti' is a cover of which REM song?
answer:
everybody hurts


question:
Which cult/religion was formed by science-fiction writer L. Ron Hubbard?
answer:
scientology


question:
Who, more famous for his opera 'Faust', wrote the music used for the anthem of the Vatican City?
answer:

charles gounod