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

Q: Bound for Glory is the 1943 autobiography of which singer-songwriter?

A: bound for glory
****
Q: What breed of dog is Marmaduke in the newspaper cartoon strip of that name?

A: dog
****
Q: Built for the 1980 Summer Olympics, which city boasts the The Izmailovo Hotel (at 2014 the world's largest, comprising 7,500 rooms)?

A:
1980 summer olympics
****