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

Ex Input:
Sentence: 'a man is standing with this luggage next to a railroad track'. Replace the letter 'g' with 'l' in the sentence.

Ex Output:
a man is standinl with this lullale next to a railroad track


Ex Input:
Sentence: 'a wooden bench near a tree and a stone wall'. Replace the letter 'l' with 'q' in the sentence.

Ex Output:
a wooden bench near a tree and a stone waqq


Ex Input:
Sentence: 'a group of skiers in action on a snowy hill'. Replace the letter 'e' with 'p' in the sentence.

Ex Output:

a group of skiprs in action on a snowy hill