TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a chinese entree displayed on a red plate'. Replace the letter 'n' with 'z' in the sentence.

SOLUTION: a chizese eztree displayed oz a red plate

PROBLEM: Sentence: 'a man that is on the back of an elephant'. Replace the letter 'c' with 'd' in the sentence.

SOLUTION: a man that is on the badk of an elephant

PROBLEM: Sentence: 'a small sad black and white dog inside a microwave oven'. Replace the letter 'n' with 'h' in the sentence.

SOLUTION:
a small sad black ahd white dog ihside a microwave oveh