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

Input: Consider Input: Sentence: 'a young boy riding his skateboard down the sidewalk'. Replace the letter 'd' with 'p' in the sentence.

Output: a young boy riping his skateboarp pown the sipewalk


Input: Consider Input: Sentence: 'the bus is trying to navigate though the london traffic'. Replace the letter 'a' with 'l' in the sentence.

Output: the bus is trying to nlviglte though the london trlffic


Input: Consider Input: Sentence: 'an older man is skiing on a sunny clear day'. Replace the letter 'n' with 'h' in the sentence.


Output: ah older mah is skiihg oh a suhhy clear day