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

Ex Input:
Sentence: A pair of pants sliding across a dresser has an easier journey then one sliding across a table. Question: Which surface will allow the pants to reach a higher top speed when sliding across it?

Ex Output:
dresser


Ex Input:
Sentence: A racehorse and a horse drawn carriage both depart from a saloon at the same time.  The horse drawn carriage is twenty times slower than the racehorse. Question: Which will arrive last at the next town?

Ex Output:
the horse drawn carriage will take more time to arrive at the next town


Ex Input:
Sentence: Tim threw a pebble down the mountain effortlessly, and it was out of site in seconds.  Bob rolled a boulder down the mountain, and after a minute of heaving, it finally descended, gaining speed as it went. Question: Which was heavier?

Ex Output:

the boulder was heavier