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

Input: Consider Input: Sentence: 'a hipster riding a skateboard up the side of a wall'. Replace the letter 's' with 'm' in the sentence.

Output: a hipmter riding a mkateboard up the mide of a wall


Input: Consider Input: Sentence: 'a woman is playing tennis on the tennis court'. Replace the letter 'r' with 'z' in the sentence.

Output: a woman is playing tennis on the tennis couzt


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