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

Input: Consider Input: Sentence: 'a large clock on the top of pole in the middle of a walk way'. Replace the letter 'f' with 'h' in the sentence.

Output: a large clock on the top oh pole in the middle oh a walk way


Input: Consider Input: Sentence: 'closeup of two teddy bears in red scarves and a brown teddy bear'. Replace the letter 'i' with 'y' in the sentence.

Output: closeup of two teddy bears yn red scarves and a brown teddy bear


Input: Consider Input: Sentence: 'the stuffed bear has a fishing pole with a toy fish on it'. Replace the letter 'n' with 's' in the sentence.


Output: the stuffed bear has a fishisg pole with a toy fish os it