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

Input: Consider Input: Sentence: 'a zebra standing by a pile of large rocks'. Replace the letter 'i' with 'x' in the sentence.

Output: a zebra standxng by a pxle of large rocks


Input: Consider Input: Sentence: 'a hand holding part of a sponge with scissors nearby'. Replace the letter 'o' with 'e' in the sentence.

Output: a hand helding part ef a spenge with scissers nearby


Input: Consider Input: Sentence: 'a street sign can be found near trees'. Replace the letter 'e' with 'x' in the sentence.


Output: a strxxt sign can bx found nxar trxxs