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

Input: Consider Input: Sentence: 'a cat sits on the floor next to a purse'. Replace the letter 'a' with 'b' in the sentence.

Output: b cbt sits on the floor next to b purse


Input: Consider Input: Sentence: 'a kitchen scene with a lot of items on the counters'. Replace the letter 't' with 'm' in the sentence.

Output: a kimchen scene wimh a lom of imems on mhe counmers


Input: Consider Input: Sentence: 'a group of surfers practicing on the beach'. Replace the letter 'h' with 'm' in the sentence.


Output: a group of surfers practicing on tme beacm