TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'this refrigerator is covered in stickers on it'. Replace the letter 't' with 'h' in the sentence.

SOLUTION: hhis refrigerahor is covered in shickers on ih

PROBLEM: Sentence: 'two knives are embedded in a wooden table'. Replace the letter 'a' with 'l' in the sentence.

SOLUTION: two knives lre embedded in l wooden tlble

PROBLEM: Sentence: 'a cat that is laying down in front of a mirror'. Replace the letter 'o' with 'z' in the sentence.

SOLUTION:
a cat that is laying dzwn in frznt zf a mirrzr