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

Input: Consider Input: Sentence: 'a group of men sitting at a desk with lap top computers'. Replace the letter 'p' with 'z' in the sentence.

Output: a grouz of men sitting at a desk with laz toz comzuters

Input: Consider Input: Sentence: 'a man in blazer holding a tie over his eyes'. Replace the letter 's' with 'e' in the sentence.

Output: a man in blazer holding a tie over hie eyee

Input: Consider Input: Sentence: 'a view of a very nice bathroom. a square mirror is above the sink'. Replace the letter 'y' with 'h' in the sentence.
Output: a view of a verh nice bathroom. a square mirror is above the sink