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

Ex Input:
Sentence: 'children trying little hamburgers from a tray at school'. Replace the letter 'y' with 'l' in the sentence.

Ex Output:
children trling little hamburgers from a tral at school


Ex Input:
Sentence: 'three men in a park playing a sport'. Replace the letter 'p' with 'w' in the sentence.

Ex Output:
three men in a wark wlaying a swort


Ex Input:
Sentence: 'a group of people are watching the train come into the station'. Replace the letter 'h' with 's' in the sentence.

Ex Output:

a group of people are watcsing tse train come into tse station