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

Ex Input:
Sentence: Ben wants to put up a poster in the school hall and he wants it to be resistant to tearing. Question: What should he make the poster on?

Ex Output:
cardboard

Ex Input:
Sentence: Mary was practicing karate by trying to break objects. She broke the plywood easily with her hand, but couldn't break the wooden stud no matter how hard she hit it. Question: Which object is the thicker one?

Ex Output:
wooden stud

Ex Input:
Sentence: A matchbox can slide across a greenhouse floor, but it doesn't move as fast as when it is slid across the backyard. Question: Which surface is the smoother one?

Ex Output:
greenhouse floor