TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'people wait for a train on a snowy sidewalk'. Replace the letter 'n' with 'm' in the sentence.

SOLUTION: people wait for a traim om a smowy sidewalk

PROBLEM: Sentence: 'a group of people are using their laptops in the dark'. Replace the letter 'p' with 'b' in the sentence.

SOLUTION: a groub of beoble are using their labtobs in the dark

PROBLEM: Sentence: 'a man hanging ten on the ocean breeze as the waves crash around him'. Replace the letter 'a' with 'w' in the sentence.

SOLUTION:
w mwn hwnging ten on the ocewn breeze ws the wwves crwsh wround him