input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The function of 2% potassium sulphate in a gypsum product is:   (A) To regulate the setting expansion   (B) Regulate setting time   (C) Acts as retarder   (D) None
output: ['(B) Regulate setting time <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) To regulate the setting expansion  (B) Regulate setting time  (C) Acts as retarder  (D) None <> possible answers', '  The function of 2% potassium sulphate in a gypsum product is: <> context']