In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Ex Input:
Sentence: Woolly mammoths began to go extinct thousands of years ago because of hunting by humans. Question: Why did woolly mammoths began to go extinct thousands of years ago?

Ex Output:
hunting by humans

Ex Input:
Sentence: Stationary front weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses. Question: What weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses?

Ex Output:
stationary front

Ex Input:
Sentence: The frequency of a wave is the reciprocal of the period of the wave. Question: The frequency of a wave is the reciprocal of what other attribute of the wave?

Ex Output:
period