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

Ex Input:
Sentence: 'a couple of giraffes eat some food out of a trey'. Replace the letter 'f' with 'e' in the sentence.

Ex Output:
a couple oe giraeees eat some eood out oe a trey


Ex Input:
Sentence: 'red helicopter with landing wheels flying in the sky'. Replace the letter 'h' with 'y' in the sentence.

Ex Output:
red yelicopter wity landing wyeels flying in tye sky


Ex Input:
Sentence: 'a kid swings at the ball in a baseball game'. Replace the letter 'b' with 'f' in the sentence.

Ex Output:

a kid swings at the fall in a fasefall game