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

Input: Consider Input: Sentence: 'a zebra standing by a pile of large rocks'. Replace the letter 'i' with 'x' in the sentence.

Output: a zebra standxng by a pxle of large rocks


Input: Consider Input: Sentence: 'a man swinging at a tennis with a racquet on a court'. Replace the letter 't' with 'c' in the sentence.

Output: a man swinging ac a cennis wich a racquec on a courc


Input: Consider Input: Sentence: 'a microwave oven on a mini fridge in a room'. Replace the letter 'm' with 'f' in the sentence.


Output: a ficrowave oven on a fini fridge in a roof