In this task, you need to replace a letter in the sentence with another given letter.

Q: Sentence: 'a small bird perched on a open window'. Replace the letter 'e' with 'r' in the sentence.

A: a small bird prrchrd on a oprn window
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Q: Sentence: 'a man standing on a tennis court holding a tennis racquet'. Replace the letter 'c' with 'y' in the sentence.

A: a man standing on a tennis yourt holding a tennis rayquet
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Q: Sentence: 'a man with white swim trunks is surfing'. Replace the letter 'e' with 'm' in the sentence.

A:
a man with whitm swim trunks is surfing
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