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

Ex Input:
Sentence: A spring rolling along a bed experiences very low friction, while one rolling along the floor experiences high friction. Question: Which surface is less rough?

Ex Output:
bed


Ex Input:
Sentence: Two chimps in a zoo always like to throw apples into the neighboring zebra enclosure. Zippy always seems to throw the apples further than Toby. Question: Which chimp is weaker?

Ex Output:
Toby


Ex Input:
Sentence: A piece of steak if thicker then a piece of paper. Question: Which object is harder to rip in half?

Ex Output:

steak