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

Ex Input:
Sentence: 'a person standing on some skis going through the snow'. Replace the letter 'o' with 'l' in the sentence.

Ex Output:
a persln standing ln slme skis gling thrlugh the snlw


Ex Input:
Sentence: 'a man in blazer holding a tie over his eyes'. Replace the letter 's' with 'e' in the sentence.

Ex Output:
a man in blazer holding a tie over hie eyee


Ex Input:
Sentence: 'two cats sitting next to each other on top of a fridge'. Replace the letter 's' with 'a' in the sentence.

Ex Output:

two cata aitting next to each other on top of a fridge