In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a baseball game is in progress at a baseball stadium'. Replace the letter 's' with 'r' in the sentence.

Answer: a bareball game ir in progrerr at a bareball rtadium

Question: Sentence: 'two people are passing a man playing a piano on the street'. Replace the letter 'o' with 'i' in the sentence.

Answer: twi peiple are passing a man playing a piani in the street

Question: Sentence: 'people are on large rocks by a river shore'. Replace the letter 'e' with 'k' in the sentence.

Answer:
pkoplk ark on largk rocks by a rivkr shork