input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Before pouring an elastic impression, it is washed with slurry of water and stone to:   (A) Increase gel strength   (B) Prevent syneresis   (C) Prevent distortion   (D) Wash off saliva on impression
output: ['(D) Wash off saliva on impression <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Increase gel strength  (B) Prevent syneresis  (C) Prevent distortion  (D) Wash off saliva on impression <> possible answers', '  Before pouring an elastic impression, it is washed with slurry of water and stone to: <> context']