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

Input: Consider Input: Sentence: 'a plate of food which contain smothered meat, potatoes and broccoli'. Replace the letter 'p' with 'v' in the sentence.

Output: a vlate of food which contain smothered meat, votatoes and broccoli


Input: Consider Input: Sentence: 'a piece of chocolate cake is on a plate with a fork'. Replace the letter 'e' with 's' in the sentence.

Output: a piscs of chocolats caks is on a plats with a fork


Input: Consider Input: Sentence: 'a post box is standing along the sidewalk'. Replace the letter 's' with 'z' in the sentence.


Output: a pozt box iz ztanding along the zidewalk