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

Example Input: Sentence: 'a toilet that is being worked on with its  seat removed'. Replace the letter 't' with 'p' in the sentence.
Example Output: a poilep phap is being worked on wiph ips  seap removed

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 side by side comparison of the same room in the past and present'. Replace the letter 'm' with 'q' in the sentence.
Example Output:
a side by side coqparison of the saqe rooq in the past and present