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

Input: Consider Input: Sentence: 'a dog laying in front of a horses stall with the horse peeking over the half door'. Replace the letter 'a' with 'b' in the sentence.

Output: b dog lbying in front of b horses stbll with the horse peeking over the hblf door


Input: Consider Input: Sentence: 'a lonley giraffe is making a trek in the wild'. Replace the letter 'r' with 'h' in the sentence.

Output: a lonley gihaffe is making a thek in the wild


Input: Consider Input: Sentence: 'a man riding a horse while other men look on'. Replace the letter 'e' with 'h' in the sentence.


Output: a man riding a horsh whilh othhr mhn look on