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

[EX Q]: Sentence: 'a mobile phone and a set of keys on a key chain'. Replace the letter 's' with 'j' in the sentence.
[EX A]: a mobile phone and a jet of keyj on a key chain

[EX Q]: Sentence: 'an elephant in chains converses with a smaller elephant who is not wearing chains'. Replace the letter 'i' with 'm' in the sentence.
[EX A]: an elephant mn chamns converses wmth a smaller elephant who ms not wearmng chamns

[EX Q]: Sentence: 'two dogs sit perched on a park bench'. Replace the letter 'h' with 'r' in the sentence.
[EX A]:
two dogs sit percred on a park bencr