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

Ex Input:
Sentence: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.

Ex Output:
a boy is sirring ar a dinner rable wirh his food


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


Ex Input:
Sentence: 'man on commuter train wearing holiday hat while sitting'. Replace the letter 't' with 'y' in the sentence.

Ex Output:

man on commuyer yrain wearing holiday hay while siyying