TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'bags of apples on display at the market'. Replace the letter 'y' with 'p' in the sentence.

SOLUTION: bags of apples on displap at the market

PROBLEM: Sentence: 'a tower type building structure with a large clock and many windows in front of a cloudy blue sky'. Replace the letter 'n' with 'x' in the sentence.

SOLUTION: a tower type buildixg structure with a large clock axd maxy wixdows ix froxt of a cloudy blue sky

PROBLEM: Sentence: 'a bus is parked outside of niagara falls'. Replace the letter 'd' with 'o' in the sentence.

SOLUTION:
a bus is parkeo outsioe of niagara falls