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

Ex Input:
Sentence: 'a ping pong player is in a ready stance to return the ball'. Replace the letter 'n' with 'e' in the sentence.

Ex Output:
a pieg poeg player is ie a ready staece to reture the ball


Ex Input:
Sentence: 'a refrigerator with both its doors open in a kitchen'. Replace the letter 'o' with 'x' in the sentence.

Ex Output:
a refrigeratxr with bxth its dxxrs xpen in a kitchen


Ex Input:
Sentence: 'pa police man on a motorcycle with a passenger cart'. Replace the letter 's' with 'x' in the sentence.

Ex Output:

pa police man on a motorcycle with a paxxenger cart