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: 'two kids sitting on a child's bed and smiling'. Replace the letter 't' with 's' in the sentence.

Answer: swo kids sissing on a child's bed and smiling

Question: Sentence: 'a man standing on a tennis court holding a racquet'. Replace the letter 't' with 'a' in the sentence.

Answer:
a man saanding on a aennis coura holding a racquea