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

Input: Consider Input: Which singer/songwriter, who began releasing hit singles in 1958, has had 3 albums (The Definitive Collection, Waking Up Is Hard to Do & The Music of My Life) on Billboard's Top 200 Albums chart between 2007 & 2010?

Output: the definitive collection


Input: Consider Input: What currency is used on Christmas Island?

Output: christmas island


Input: Consider Input: Who wrote 'The Boys From Brazil'?


Output: the boys from brazil