TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man on the news, watched on the television'. Replace the letter 'o' with 'z' in the sentence.

SOLUTION: a man zn the news, watched zn the televisizn

PROBLEM: Sentence: 'a person and a dog are on a bench'. Replace the letter 'e' with 'r' in the sentence.

SOLUTION: a prrson and a dog arr on a brnch

PROBLEM: Sentence: 'two young men in ties sit on a bench with a laptop'. Replace the letter 'e' with 'q' in the sentence.

SOLUTION:
two young mqn in tiqs sit on a bqnch with a laptop