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

Input: Consider Input: Sentence: 'a giraffe and a zebra stare at each other'. Replace the letter 'g' with 'l' in the sentence.

Output: a liraffe and a zebra stare at each other


Input: Consider Input: Sentence: 'a man standing on a tennis court holding a tennis racquet'. Replace the letter 'c' with 'y' in the sentence.

Output: a man standing on a tennis yourt holding a tennis rayquet


Input: Consider Input: Sentence: 'various items are strewn out on top of a bed'. Replace the letter 'r' with 'e' in the sentence.


Output: vaeious items aee steewn out on top of a bed