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

Input: Consider Input: What name was given to the 1950-60s mainstream country music style of artists including Patsy Cline, Tammy Wynette, Jim Reeves, and Charlie Rich?

Output: charlie rich


Input: Consider Input: Which Beatles song was also recorded by Peter Sellers?

Output: the beatles


Input: Consider Input: Name the swimmer who won 8 gold medals at the Beijing Olympics in 2008.?


Output: 2008 summer olympics