TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a study table with computer, mouse and keyboard .photo frame are also kept'. Replace the letter 'u' with 'q' in the sentence.

SOLUTION: a stqdy table with compqter, moqse and keyboard .photo frame are also kept

PROBLEM: Sentence: 'a chinese entree displayed on a red plate'. Replace the letter 'n' with 'z' in the sentence.

SOLUTION: a chizese eztree displayed oz a red plate

PROBLEM: Sentence: 'a couch and chair in a small room'. Replace the letter 'u' with 'k' in the sentence.

SOLUTION:
a cokch and chair in a small room