TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a baseball player running to third base from second'. Replace the letter 'a' with 'u' in the sentence.

SOLUTION: u busebull pluyer running to third buse from second

PROBLEM: Sentence: 'a gray and white cat sleeping on top of a laptop computer'. Replace the letter 'l' with 'g' in the sentence.

SOLUTION: a gray and white cat sgeeping on top of a gaptop computer

PROBLEM: Sentence: 'a cat falling asleep between a computer and its keyboard'. Replace the letter 'd' with 'r' in the sentence.

SOLUTION:
a cat falling asleep between a computer anr its keyboarr