TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a fancy clock is lit up on the street'. Replace the letter 'o' with 'f' in the sentence.

SOLUTION: a fancy clfck is lit up fn the street

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 corner of a small bathroom with a sink next to a window'. Replace the letter 'a' with 'j' in the sentence.

SOLUTION:
j corner of j smjll bjthroom with j sink next to j window