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 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?
[EX A]: front

[EX Q]: Sentence: Red-shift refers to a shift toward red in the spectrum from stars. Question: red-shift refers to a shift toward red in the spectrum from what celestial bodies?
[EX A]: stars

[EX Q]: Sentence: Nuclear fusion, which results because of great pressure at the center of a star, causes stars to shine. Question: What process, which results because of great pressure at the center of a star, causes stars to shine?
[EX A]:
nuclear fusion