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

[EX Q]: Sentence: 'this is a man and boy holding skis'. Replace the letter 'h' with 'l' in the sentence.
[EX A]: tlis is a man and boy lolding skis

[EX Q]: Sentence: 'a lonley giraffe is making a trek in the wild'. Replace the letter 'r' with 'h' in the sentence.
[EX A]: a lonley gihaffe is making a thek in the wild

[EX Q]: Sentence: 'a black and brown dog walking across a sandy beach'. Replace the letter 'a' with 'i' in the sentence.
[EX A]:
i blick ind brown dog wilking icross i sindy beich