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 long green grain traveling past a white building'. Replace the letter 'w' with 'o' in the sentence.

A: a long green grain traveling past a ohite building
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Q: Sentence: 'a man in the front seat of a car on a laptop computer'. Replace the letter 't' with 'b' in the sentence.

A:
a man in bhe fronb seab of a car on a lapbop compuber
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