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.

[Q]: 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?
[A]: front

[Q]: Sentence: A flower's colors come from vacuole part of the plant. Question: A flower's colors come from what part of the plant?
[A]: vacuole

[Q]: Sentence: Second is the smallest unit of time commonly based on. Question: What is the smallest unit of time commonly based on?
[A]:
second