instruction:
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.
question:
Sentence: The acidity of a solution is typically assessed experimentally by measurement of its ph. Question: The acidity of a solution is typically assessed experimentally by measurement of its what?
answer:
ph


question:
Sentence: At high altitudes there is lower atmospheric pressure than on the surface of the earth of the following best explains why the pressure inside a high-flying airplane must be controlled. Question: Which of the following best explains why the pressure inside a high-flying airplane must be controlled?
answer:
At high altitudes there is lower atmospheric pressure than on the surface of the Earth.


question:
Sentence: Early in the development of a human fetus, the skeleton is made entirely of cartilage. Question: Early in the development of a human fetus, the skeleton is made entirely of what?
answer:

cartilage