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 two brothers had hits with Cathy's Clown and Wake Up Little Susie?

Output: cathy's clown


Input: Consider Input: What was the first British credit card?

Output: credit card


Input: Consider Input: Who released an album in 1973 called Billion Dollar Babies?


Output: billion dollar babies