input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The proximal walls of a class II cavity on a deciduous molar:   (A) Follow directions of enamel rods   (B) Converge toward occlusal surface   (C) Diverge toward occlusal surface   (D) Undermine enamel which is very thin
output: ['(B) Converge toward occlusal surface <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Follow directions of enamel rods  (B) Converge toward occlusal surface  (C) Diverge toward occlusal surface  (D) Undermine enamel which is very thin <> possible answers', '  The proximal walls of a class II cavity on a deciduous molar: <> context']