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

Which rock group was founded in Seattle in 1994 by David Grohl after the break-up of Nirvana?
nirvana
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Which rock group was founded in Seattle in 1994 by David Grohl after the break-up of Nirvana?
user
nirvana
assistant
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Which rock group was founded in Seattle in 1994 by David Grohl after the break-up of Nirvana?
nirvana