TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a gray and white cat sleeping on top of a laptop computer'. Replace the letter 'l' with 'g' in the sentence.

SOLUTION: a gray and white cat sgeeping on top of a gaptop computer

PROBLEM: Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.

SOLUTION: stone and white coloped stpuctupe in fpont of white modepn building

PROBLEM: Sentence: 'a bunch of food is on a white plate'. Replace the letter 'd' with 'i' in the sentence.

SOLUTION:
a bunch of fooi is on a white plate