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

[Q]: Sentence: 'a group of men and women sitting next to each other'. Replace the letter 'p' with 'l' in the sentence.
[A]: a groul of men and women sitting next to each other


[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


[Q]: Sentence: 'a couple of elephants that are standing on a stoll'. Replace the letter 'd' with 'z' in the sentence.
[A]:
a couple of elephants that are stanzing on a stoll