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

Input: Consider Input: Sentence: Janet is testing how much mass objects have. She is currently testing between a metal rod and a paper crane. She drops both from six feet in the air at the same time. Question: Which has stronger gravity?

Output: metal rod

Input: Consider Input: Sentence: A millipede and a centipede were walking along a trail at the same speed. The millipede stopped after 8 feet and the centipede kept going. Question: Which one spent less time walking?

Output: the millipede

Input: Consider Input: Sentence: A worm and a caterpillar are crawling across a fallen tree trunk. The worm is not as speedy as the caterpillar. Question: Which will take longer to get across the tree trunk?
Output: worm