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

Ex Input:
Sentence: The mass of Mars is greater then that of Venus. Question: Which planet emits stronger gravity?

Ex Output:
Mars


Ex Input:
Sentence: Linda and Thomas decide to walk to the park.  Linda looks around and walks at a more leisurely pace while Thomas walks briskly. Question: Who takes longer to reach the park?

Ex Output:
Linda


Ex Input:
Sentence: A banjo slides at a low rate of speed across a porch swing, but a high rate of speed across the porch of Mike's old house. Question: Which surface is going to give the banjo a rougher ride?

Ex Output:

porch swing


