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 woman standing in front of a bear in an enclosure'. Replace the letter 'e' with 'r' in the sentence.

Output: a woman standing in front of a brar in an rnclosurr


Input: Consider Input: Sentence: 'a skateboarded grinding on the top of a skate ramp'. Replace the letter 'i' with 'u' in the sentence.


Output: a skateboarded grundung on the top of a skate ramp