TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a broken suitcase on a small tile floor with the contents exposed'. Replace the letter 'u' with 'z' in the sentence.

SOLUTION: a broken szitcase on a small tile floor with the contents exposed

PROBLEM: Sentence: 'bags of seeds with a pair of black scissors sitting on them'. Replace the letter 'b' with 'y' in the sentence.

SOLUTION: yags of seeds with a pair of ylack scissors sitting on them

PROBLEM: Sentence: 'there is a small apartment kitchen with white appliances'. Replace the letter 'e' with 'q' in the sentence.

SOLUTION:
thqrq is a small apartmqnt kitchqn with whitq appliancqs