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

Input: Consider Input: Sentence: 'there is a big room with furniture and items inside'. Replace the letter 'e' with 'k' in the sentence.

Output: thkrk is a big room with furniturk and itkms insidk


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 street sign sits out side of a large two story building'. Replace the letter 'i' with 'x' in the sentence.


Output: a street sxgn sxts out sxde of a large two story buxldxng