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

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: 'three laptops are turned on lined up on a table'. Replace the letter 't' with 'g' in the sentence.

Ex Output:
ghree lapgops are gurned on lined up on a gable


Ex Input:
Sentence: 'a green train waiting at the station while passengers load'. Replace the letter 'i' with 'm' in the sentence.

Ex Output:

a green tramn wamtmng at the statmon whmle passengers load