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

Ex Input:
Sentence: 'a man getting ready to hit a ball at a baseball game'. Replace the letter 'n' with 'v' in the sentence.

Ex Output:
a mav gettivg ready to hit a ball at a baseball game


Ex Input:
Sentence: 'a man that is on the back of an elephant'. Replace the letter 'c' with 'd' in the sentence.

Ex Output:
a man that is on the badk of an elephant


Ex Input:
Sentence: 'a couple of giraffes being feed by people at the zoo'. Replace the letter 't' with 'v' in the sentence.

Ex Output:

a couple of giraffes being feed by people av vhe zoo