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

Ex Input:
Sentence: 'several older electronics, including cellular phones and a palm pilot with a  broken screen next to each other in white box enclosure'. Replace the letter 'u' with 't' in the sentence.

Ex Output:
several older electronics, incltding celltlar phones and a palm pilot with a  broken screen next to each other in white box enclostre


Ex Input:
Sentence: 'a couple of giraffe standing next to each other'. Replace the letter 'i' with 'q' in the sentence.

Ex Output:
a couple of gqraffe standqng next to each other


Ex Input:
Sentence: 'a man attempting to instruct a small child to use a mechanical toothbrush'. Replace the letter 't' with 'j' in the sentence.

Ex Output:

a man ajjempjing jo insjrucj a small child jo use a mechanical joojhbrush