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

Input: Consider Input: Sentence: 'two zebras are snuggling at the zoo in their display area'. Replace the letter 'e' with 'z' in the sentence.

Output: two zzbras arz snuggling at thz zoo in thzir display arza


Input: Consider Input: Sentence: 'a geoup of people on bicycles coming down a street'. Replace the letter 'i' with 'x' in the sentence.

Output: a geoup of people on bxcycles comxng down a street


Input: Consider Input: Sentence: 'a young girl riding a pony lead by a man'. Replace the letter 'b' with 'p' in the sentence.


Output: a young girl riding a pony lead py a man