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: Weight is the force of gravity. Question: What is the force of gravity called?
[EX A]: weight

[EX Q]: Sentence: Certain air pollutants form acid liquid when dissolved in water droplets in the air. Question: Certain air pollutants form which liquid when dissolved in water droplets in the air?
[EX A]: acid

[EX Q]: Sentence: Four is the most electron-pair bonds a nitrogen atom can participate in. Question: What is the most electron-pair bonds a nitrogen atom can participate in?
[EX A]:
four