TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man is standing with this luggage next to a railroad track'. Replace the letter 'g' with 'l' in the sentence.

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

PROBLEM: Sentence: 'a person holding a green cell phone in a classroom with many desks'. Replace the letter 'k' with 'w' in the sentence.

SOLUTION: a person holding a green cell phone in a classroom with many desws

PROBLEM: Sentence: 'a woman wearing a hat is sitting on a boat'. Replace the letter 'g' with 'k' in the sentence.

SOLUTION:
a woman wearink a hat is sittink on a boat