In this task, you are given a word. You should respond with a valid sentence which contains the given word. Make sure that the sentence is grammatically correct. You may use the word in a different tense than is given. For example, you may use the word 'ended' in the output where the given input word is 'end'.

Q: concoction

A: She has no peer in the concoction of mystery stories.
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Q: smile

A: She had a smile on her face.
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Q: underestimate

A:
Don't underestimate the danger of such a raft trip on this river.
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