input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Brittle bone syndrome is caused by   (A) Improper synthesis of procollagen   (B) Polymerisation of collagen   (C) Increased osteoclastic activity   (D) Increased fibroblastic activity
output: ['(A) Improper synthesis of procollagen <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Improper synthesis of procollagen  (B) Polymerisation of collagen  (C) Increased osteoclastic activity  (D) Increased fibroblastic activity <> possible answers', '  Brittle bone syndrome is caused by <> context']