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

Q: Sentence: 'a couple walking down a sidewalk next to some graffiti'. Replace the letter 'a' with 'y' in the sentence.

A: y couple wylking down y sidewylk next to some gryffiti
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Q: Sentence: 'this refrigerator is covered in stickers on it'. Replace the letter 't' with 'h' in the sentence.

A: hhis refrigerahor is covered in shickers on ih
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Q: Sentence: 'a man eats while holding himself up in a one-hand push up position'. Replace the letter 'i' with 'p' in the sentence.

A:
a man eats whple holdpng hpmself up pn a one-hand push up posptpon
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