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

Ex Input:
Sentence: 'a baseball player swings his bat at a pitch'. Replace the letter 's' with 'l' in the sentence.

Ex Output:
a baleball player lwingl hil bat at a pitch


Ex Input:
Sentence: 'a group of women are sitting at a table eating lunch'. Replace the letter 'e' with 'k' in the sentence.

Ex Output:
a group of womkn ark sitting at a tablk kating lunch


Ex Input:
Sentence: 'four people ride on top of an elephant'. Replace the letter 'o' with 'd' in the sentence.

Ex Output:

fdur pedple ride dn tdp df an elephant