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

Q: Sentence: 'a couple of kids with rackets on a court'. Replace the letter 'u' with 'd' in the sentence.

A: a codple of kids with rackets on a codrt
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Q: Sentence: 'a close up of a grassy beach showing an umbrella and wind board'. Replace the letter 'a' with 'f' in the sentence.

A: f close up of f grfssy befch showing fn umbrellf fnd wind bofrd
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Q: Sentence: 'a bird sitting on the horn of a mask that is leaning against a window'. Replace the letter 's' with 'c' in the sentence.

A:
a bird citting on the horn of a mack that ic leaning againct a window
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