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.
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Question: Sentence: Wavelength is the distance between two corresponding points of adjacent waves called. Question: What is the distance between two corresponding points of adjacent waves called?

Answer: wavelength


Question: Sentence: Clouds are formed from water droplets. Question: Clouds are formed from what?

Answer: water droplets


Question: Sentence: Replace another in a molecule happens to atoms during a substitution reaction. Question: What happens to atoms during a substitution reaction?

Answer:
replace another in a molecule