TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man in a field standing as a ball comes through the air towards him'. Replace the letter 'u' with 'j' in the sentence.

SOLUTION: a man in a field standing as a ball comes throjgh the air towards him

PROBLEM: Sentence: 'a man is ordering food from a mobile food truck'. Replace the letter 'r' with 'q' in the sentence.

SOLUTION: a man is oqdeqing food fqom a mobile food tquck

PROBLEM: Sentence: 'the antique motorcycle is parked beside a truck'. Replace the letter 'a' with 'u' in the sentence.

SOLUTION:
the untique motorcycle is purked beside u truck