TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'this poster is advertising high performance with a girl riding a bicycle and some taxis on the street'. Replace the letter 't' with 'f' in the sentence.

SOLUTION: fhis posfer is adverfising high performance wifh a girl riding a bicycle and some faxis on fhe sfreef

PROBLEM: Sentence: 'a man in blazer holding a tie over his eyes'. Replace the letter 's' with 'e' in the sentence.

SOLUTION: a man in blazer holding a tie over hie eyee

PROBLEM: Sentence: 'a plate of food and a drink on a table'. Replace the letter 'a' with 't' in the sentence.

SOLUTION:
t pltte of food tnd t drink on t ttble