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

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 group of men sitting at a desk with lap top computers'. Replace the letter 'p' with 'z' in the sentence.
Example Output: a grouz of men sitting at a desk with laz toz comzuters

Example Input: Sentence: 'street sign showing the name of the street in english and then in
asian characters below'. Replace the letter 'a' with 'c' in the sentence.
Example Output:
street sign showing the ncme of the street in english cnd then in
csicn chcrccters below