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

Ex Input:
Sentence: 'two children who are standing next to a white fire hydrant'. Replace the letter 't' with 'r' in the sentence.

Ex Output:
rwo children who are sranding nexr ro a whire fire hydranr


Ex Input:
Sentence: 'a toaster oven painted on the side of a wall'. Replace the letter 'e' with 'p' in the sentence.

Ex Output:
a toastpr ovpn paintpd on thp sidp of a wall


Ex Input:
Sentence: 'a woman walks through a crowd in china'. Replace the letter 'h' with 'q' in the sentence.

Ex Output:

a woman walks tqrougq a crowd in cqina