Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

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

Mar Chiquita (Cordoba) is the largest natural salt lake in which South American country?
mar chiquita lake

Bryher is part of which island group?

bryher, isles of scilly