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

Input: Consider Input: Sentence: 'a row of lawn chairs with umbrellas over them'. Replace the letter 'e' with 'x' in the sentence.

Output: a row of lawn chairs with umbrxllas ovxr thxm


Input: Consider Input: Sentence: 'traffic congestion with cars and an electric tram'. Replace the letter 'a' with 'k' in the sentence.

Output: trkffic congestion with ckrs knd kn electric trkm


Input: Consider Input: Sentence: 'a man eats while holding himself up in a one-hand push up position'. Replace the letter 'i' with 'p' in the sentence.


Output: a man eats whple holdpng hpmself up pn a one-hand push up posptpon


