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

Ex Input:
Abyssinian, British Longhair and German Rex are all breeds of what?

Ex Output:
british longhair


Ex Input:
In which constellation is the star Deneb?

Ex Output:
deneb


Ex Input:
Pompey the Great and Crassus were two of the 'First Triumverate' in 60 BC. Who was the third?

Ex Output:

marcus licinius crassus