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

Ex Input:
Besides the Caucasus, what mountain range forms the border of Europe and Asia?

Ex Output:
asia


Ex Input:
The Battle of Poltava in 1709 was a victory by Peter the Great over which state?

Ex Output:
battle of poltava


Ex Input:
Baldy Mountain is the highest peak in which range of mountains in New Mexico?

Ex Output:

baldy mountain