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

Q: Which team lost the 2009 Superbowl to the Pittsburgh Steelers?

A: super bowl xliii
****
Q: Which analgesic drug, first isolated in 1804, was named after the Greek god of dreams ?

A: analgesic
****
Q: King Claudius and Queen Gertrude appear in which Shakespeare play?

A:
gertrude
****