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: Excessive bending stress usually causes fractures on a bone. Question: What usually causes fractures on a bone?
[A]: excessive bending stress


[Q]: Sentence: Amoebas and paramecia are examples of protozoa. Question: Amoebas and paramecia are examples of what?
[A]: protozoa


[Q]: Sentence: Differences in heating is the primary cause of air movement in the troposphere. Question: What is the primary cause of air movement in the troposphere?
[A]:
differences in heating