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

Example Input: Sentence: 'many street signs in front of a building while it is snowing'. Replace the letter 'r' with 'x' in the sentence.
Example Output: many stxeet signs in fxont of a building while it is snowing

Example Input: Sentence: 'plated foods displayed on table with condiments and side dishes'. Replace the letter 's' with 'd' in the sentence.
Example Output: plated foodd didplayed on table with condimentd and dide didhed

Example Input: Sentence: 'a messy and unorganized workspace with a laptop'. Replace the letter 'r' with 'i' in the sentence.
Example Output:
a messy and unoiganized woikspace with a laptop