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

Example Input: Sentence: 'two zebras are snuggling at the zoo in their display area'. Replace the letter 'e' with 'z' in the sentence.
Example Output: two zzbras arz snuggling at thz zoo in thzir display arza

Example Input: Sentence: 'a bowl filled with vegetables and noodles on a table'. Replace the letter 'l' with 'r' in the sentence.
Example Output: a bowr firred with vegetabres and noodres on a tabre

Example Input: Sentence: 'a large building that has a very large clock on it'. Replace the letter 'l' with 'y' in the sentence.
Example Output:
a yarge buiyding that has a very yarge cyock on it