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

Input: Consider Input: Sentence: 'a tower type building structure with a large clock and many windows in front of a cloudy blue sky'. Replace the letter 'n' with 'x' in the sentence.

Output: a tower type buildixg structure with a large clock axd maxy wixdows ix froxt of a cloudy blue sky


Input: Consider Input: Sentence: 'a toilet in a bathroom with small white tile on the floor'. Replace the letter 'a' with 'p' in the sentence.

Output: p toilet in p bpthroom with smpll white tile on the floor


Input: Consider Input: Sentence: 'two people are hiking up a snowy mountain with skis attached to their backs'. Replace the letter 'o' with 'f' in the sentence.


Output: twf pefple are hiking up a snfwy mfuntain with skis attached tf their backs