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

Example Input: Who did boxer Floyd Patterson defeat to regain the Heavyweight Championship in June 1960?
Example Output: boxing

Example Input: Which legal drama starring Martin Shaw ran for six series on BBC TV from 2001?
Example Output: martin shaw

Example Input: In the US, which state lies to the east of Arizona?
Example Output:
arizona