In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a crooked street sign on a damaged sidewalk'. Replace the letter 'm' with 'u' in the sentence.

Answer: a crooked street sign on a dauaged sidewalk

Question: Sentence: 'a herd of cattle standing on a lush green field'. Replace the letter 'g' with 'f' in the sentence.

Answer: a herd of cattle standinf on a lush freen field

Question: Sentence: 'a sign warning drivers that there are children at play'. Replace the letter 's' with 'e' in the sentence.

Answer:
a eign warning drivere that there are children at play