TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'adult man on grassy field playing disc game'. Replace the letter 'n' with 'l' in the sentence.

SOLUTION: adult mal ol grassy field playilg disc game

PROBLEM: Sentence: 'a couple of giraffes being feed by people at the zoo'. Replace the letter 't' with 'v' in the sentence.

SOLUTION: a couple of giraffes being feed by people av vhe zoo

PROBLEM: Sentence: 'a black cat is sniffing a glass bottle'. Replace the letter 'c' with 'f' in the sentence.

SOLUTION:
a blafk fat is sniffing a glass bottle