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

Example Input: Sentence: 'a couple of kids laying in bed together'. Replace the letter 'o' with 'v' in the sentence.
Example Output: a cvuple vf kids laying in bed tvgether

Example Input: Sentence: 'a person lays on the inside of a suitcase'. Replace the letter 'i' with 'l' in the sentence.
Example Output: a person lays on the lnslde of a sultcase

Example Input: Sentence: 'a bathroom view of a toilet and a sink'. Replace the letter 't' with 'm' in the sentence.
Example Output:
a bamhroom view of a moilem and a sink