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

Input: Consider Input: Sentence: 'people are standing outside in the parking lot'. Replace the letter 'i' with 'z' in the sentence.

Output: people are standzng outszde zn the parkzng lot

Input: Consider Input: Sentence: 'a couple of men playing a game of tennis'. Replace the letter 'n' with 'c' in the sentence.

Output: a couple of mec playicg a game of teccis

Input: Consider Input: Sentence: 'a red bench sitting next to a white umbrella'. Replace the letter 'e' with 'q' in the sentence.
Output: a rqd bqnch sitting nqxt to a whitq umbrqlla