input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Mesial and distal wall of class V cavity depends on:   (A) Direction of enamel rods   (B) Presence of carious lesion   (C) Contour of gingiva   (D) Location of contact area
output: ['(A) Direction of enamel rods <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Direction of enamel rods  (B) Presence of carious lesion  (C) Contour of gingiva  (D) Location of contact area <> possible answers', '  Mesial and distal wall of class V cavity depends on: <> context']