TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a large elephant that has people all around it'. Replace the letter 'h' with 'm' in the sentence.

SOLUTION: a large elepmant tmat mas people all around it

PROBLEM: Sentence: 'a man rolling dough in the kitchen'. Replace the letter 'a' with 'e' in the sentence.

SOLUTION: e men rolling dough in the kitchen

PROBLEM: Sentence: 'darkness surrounding an unidentified object with bright colors'. Replace the letter 'o' with 'k' in the sentence.

SOLUTION:
darkness surrkunding an unidentified kbject with bright cklkrs