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

[Q]: Sentence: 'a man who is surfing in a wave in the ocean'. Replace the letter 'a' with 'u' in the sentence.
[A]: u mun who is surfing in u wuve in the oceun


[Q]: Sentence: 'a young boy in a shopping cart looking at tooth brushes'. Replace the letter 'o' with 'r' in the sentence.
[A]: a yrung bry in a shrpping cart lrrking at trrth brushes


[Q]: Sentence: 'a plane getting ready to land at an airport'. Replace the letter 'a' with 'y' in the sentence.
[A]:
y plyne getting reydy to lynd yt yn yirport