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

Ex Input:
Sentence: 'a large white sign with black lettering  leaning against a metal fence'. Replace the letter 'e' with 'j' in the sentence.

Ex Output:
a largj whitj sign with black ljttjring  ljaning against a mjtal fjncj


Ex Input:
Sentence: 'a bathroom with a white toilet next to a large window'. Replace the letter 'w' with 'x' in the sentence.

Ex Output:
a bathroom xith a xhite toilet next to a large xindox


Ex Input:
Sentence: 'a couple of men standing next to each other holding nintendo wii game controllers'. Replace the letter 'a' with 'p' in the sentence.

Ex Output:

p couple of men stpnding next to epch other holding nintendo wii gpme controllers