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: Ion drives have low thrust but high efficiency. Question: Ion drives have low thrust but high what?

Answer: efficiency


Question: Sentence: Diffusion is the process in which a substance naturally moves from an area of higher to lower concentration. Question: What is the process in which a substance naturally moves from an area of higher to lower concentration called?

Answer: diffusion


Question: Sentence: Optics explains the behavior of visible light and electromagnetic waves. Question: What type of physics explains the behavior of visible light and electromagnetic waves?

Answer:
optics