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

Example Input: Sentence: 'a study features the color green and old-fashioned furniture'. Replace the letter 'e' with 'd' in the sentence.
Example Output: a study fdaturds thd color grddn and old-fashiondd furniturd

Example Input: Sentence: 'a seafood dish served over a bowl of white rice'. Replace the letter 'e' with 'u' in the sentence.
Example Output: a suafood dish survud ovur a bowl of whitu ricu

Example Input: Sentence: 'a shop with many people waiting in the queues'. Replace the letter 'm' with 'j' in the sentence.
Example Output:
a shop with jany people waiting in the queues