TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a couple of kids with rackets on a court'. Replace the letter 'u' with 'd' in the sentence.

SOLUTION: a codple of kids with rackets on a codrt

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: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.

SOLUTION:
a boy is sirring ar a dinner rable wirh his food