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: 'a baseball player holding a baseball bat during a baseball game'. Replace the letter 'a' with 'u' in the sentence.
[EX A]: u busebull pluyer holding u busebull but during u busebull gume

[EX Q]: Sentence: 'men are walking horses as people sitting around them watch'. Replace the letter 's' with 'j' in the sentence.
[EX A]:
men are walking horjej aj people jitting around them watch