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

Q: Sentence: 'a woman is standing on a street curb'. Replace the letter 'a' with 't' in the sentence.

A: t womtn is sttnding on t street curb
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Q: Sentence: 'several older electronics, including cellular phones and a palm pilot with a  broken screen next to each other in white box enclosure'. Replace the letter 'u' with 't' in the sentence.

A: several older electronics, incltding celltlar phones and a palm pilot with a  broken screen next to each other in white box enclostre
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Q: Sentence: 'a window looks out to a tower on top of a building'. Replace the letter 'w' with 'i' in the sentence.

A:
a iindoi looks out to a toier on top of a building
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