TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'street signs hanging next to a traffic light on a city street'. Replace the letter 'g' with 'm' in the sentence.

SOLUTION: street simns hanminm next to a traffic limht on a city street

PROBLEM: Sentence: 'there is a young baby that is wearing a tie'. Replace the letter 't' with 'c' in the sentence.

SOLUTION: chere is a young baby chac is wearing a cie

PROBLEM: Sentence: 'a red bus stopped at a bus stop near a building'. Replace the letter 'a' with 'i' in the sentence.

SOLUTION:
i red bus stopped it i bus stop neir i building