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: Theevolution by natural selection theory explains how populations of organisms can change over time. Question: Which theory explains how populations of organisms can change over time?

Answer: evolution by natural selection


Question: Sentence: Distance over time in a given direction determines velocity. Question: What determines velocity?

Answer: distance over time in a given direction


Question: Sentence: Radio waves are the broad range of electromagnetic waves with the longest wavelengths and lowest frequencies. Question: What waves are the broad range of electromagnetic waves with the longest wavelengths and lowest frequencies?

Answer:
radio