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

Q: Sentence: 'a person that is sitting under an umbrella'. Replace the letter 'a' with 'l' in the sentence.

A: l person thlt is sitting under ln umbrelll
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Q: Sentence: 'a couple sits on a bench in the countryside'. Replace the letter 'y' with 'k' in the sentence.

A: a couple sits on a bench in the countrkside
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Q: Sentence: 'man swinging a tennis racket on a green and blue court'. Replace the letter 't' with 'w' in the sentence.

A:
man swinging a wennis rackew on a green and blue courw
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