input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Arch length analysis of a dentition shows a discrepancy of more than 10 mm. This indicates:   (A) No extraction required if treated at an early age   (B) No extraction required   (C) Extraction of posterior teeth   (D) Proximal stripping
output: ['(C) Extraction of posterior teeth <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) No extraction required if treated at an early age  (B) No extraction required  (C) Extraction of posterior teeth  (D) Proximal stripping <> possible answers', '  Arch length analysis of a dentition shows a discrepancy of more than 10 mm. This indicates: <> context']