TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a teddy bear dressed in denim is laying on a floor'. Replace the letter 'i' with 'd' in the sentence.

SOLUTION: a teddy bear dressed dn dendm ds laydng on a floor

PROBLEM: Sentence: 'lose up of various trays of croissants and muffins'. Replace the letter 'n' with 'f' in the sentence.

SOLUTION: lose up of various trays of croissafts afd muffifs

PROBLEM: Sentence: 'a woman in a red outfit holding a tennis racquet'. Replace the letter 'd' with 'a' in the sentence.

SOLUTION:
a woman in a rea outfit holaing a tennis racquet