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

Example Input: Sentence: 'a group of women are sitting at a table eating lunch'. Replace the letter 'e' with 'k' in the sentence.
Example Output: a group of womkn ark sitting at a tablk kating lunch

Example Input: Sentence: 'two tennis players shaking hands over the net'. Replace the letter 'n' with 'f' in the sentence.
Example Output: two teffis players shakifg hafds over the fet

Example Input: Sentence: 'a kit with a face design hanging from a roof of a building'. Replace the letter 'm' with 'k' in the sentence.
Example Output:
a kit with a face design hanging frok a roof of a building