You are given a sentence and a question. You're expected to write the correct answer based on the sentence.

Ex Input:
Sentence: Milo knows that a frozen lake is smoother than a grass field. This means that when he slides his paper plane across one of the two surfaces it will experience less friction. Question: Which surface is that?

Ex Output:
frozen lake


Ex Input:
Sentence: A hot dog rolled along a dirty counter rolls slower then one rolled along a clean counter. Question: Which surface would make the hot dog get hotter when rolled along it?

Ex Output:
dirty counter


Ex Input:
Sentence: A panther running through a forest has a rougher time then one running through the jungle. Question: Which area will make the panther get hotter as he runs?

Ex Output:

forest