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

Ex Input:
Sentence: 'a man with a backpack on a motorcycle'. Replace the letter 't' with 'd' in the sentence.

Ex Output:
a man widh a backpack on a modorcycle


Ex Input:
Sentence: 'subway train approaching the platform of a subway station'. Replace the letter 'y' with 'c' in the sentence.

Ex Output:
subwac train approaching the platform of a subwac station


Ex Input:
Sentence: 'eight trolley that is going by a house'. Replace the letter 't' with 'l' in the sentence.

Ex Output:

eighl lrolley lhal is going by a house