TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'one wall in the room is flanked by a lovely piece of furniture which displays several object d'art'. Replace the letter 'n' with 'z' in the sentence.

SOLUTION: oze wall iz the room is flazked by a lovely piece of furziture which displays several object d'art

PROBLEM: Sentence: 'a black and white image of a vehicle that is decorated like a dog'. Replace the letter 'a' with 'p' in the sentence.

SOLUTION: p blpck pnd white impge of p vehicle thpt is decorpted like p dog

PROBLEM: Sentence: 'a purple teddy bear is resting with a book open on his lap'. Replace the letter 'n' with 'q' in the sentence.

SOLUTION:
a purple teddy bear is restiqg with a book opeq oq his lap