Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.
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Question: Fact: combining two substances chemically causes chemical reactions

Answer: Cola and mentos combined will?

Question: Fact: the shape of an object can be discovered through feeling that object

Answer: braille is read by using your fingers to?

Question: Fact: when the seasons change from the summer to the fall , the amount of daylight will decrease

Answer:
Light in the evening will do what as fall approaches?