TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a family opens gifts in a room with their dog, while sitting on couches'. Replace the letter 's' with 'l' in the sentence.

SOLUTION: a family openl giftl in a room with their dog, while litting on couchel

PROBLEM: Sentence: 'a plate topped with a bacon and broccoli salad'. Replace the letter 'o' with 't' in the sentence.

SOLUTION: a plate ttpped with a bactn and brtcctli salad

PROBLEM: Sentence: 'two men are playing wii in the living room'. Replace the letter 'v' with 'd' in the sentence.

SOLUTION:
two men are playing wii in the liding room