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

Ex Input:
Sentence: 'a little kid that is eating an apple'. Replace the letter 'p' with 'j' in the sentence.

Ex Output:
a little kid that is eating an ajjle


Ex Input:
Sentence: 'a white plate topped with a cut in half sandwich'. Replace the letter 'o' with 'x' in the sentence.

Ex Output:
a white plate txpped with a cut in half sandwich


Ex Input:
Sentence: 'a stop sign with graffiti written on it'. Replace the letter 'f' with 'x' in the sentence.

Ex Output:

a stop sign with graxxiti written on it