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

Ex Input:
Sentence: 'an old rusty car sits outside of an old building'. Replace the letter 'o' with 'r' in the sentence.

Ex Output:
an rld rusty car sits rutside rf an rld building


Ex Input:
Sentence: 'a baby pokes his head out of a suitcase'. Replace the letter 'u' with 's' in the sentence.

Ex Output:
a baby pokes his head ost of a ssitcase


Ex Input:
Sentence: 'a man dressed in a knight costume riding a horse performing at a show'. Replace the letter 'e' with 'j' in the sentence.

Ex Output:

a man drjssjd in a knight costumj riding a horsj pjrforming at a show