TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'picture of a gothic church with a blue sky in the background'. Replace the letter 'e' with 'i' in the sentence.

SOLUTION: picturi of a gothic church with a blui sky in thi background

PROBLEM: Sentence: 'the door of the refrigerator has many magnets and small pictures on it'. Replace the letter 's' with 'z' in the sentence.

SOLUTION: the door of the refrigerator haz many magnetz and zmall picturez on it

PROBLEM: Sentence: 'a man in grey hooding holding a frisbee'. Replace the letter 'n' with 'j' in the sentence.

SOLUTION:
a maj ij grey hoodijg holdijg a frisbee