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.

Input: Consider Input: Sentence: In weather terms, the boundary between two air masses is called front. Question: In weather terms, what do you call the boundary between two air masses?

Output: front


Input: Consider Input: Sentence: Centrioles help organize the chromosomes before cell division so that each daughter cell has the correct number of chromosomes. Question: Centrioles help organize the chromosomes before cell division so that each daughter cell has the correct number of what?

Output: chromosomes


Input: Consider Input: Sentence: Nitrogen gas comprises about three-fourths of earth's atmosphere. Question: What gas comprises about three-fourths of earth's atmosphere?


Output: nitrogen