input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Calcium ions triggers muscle contraction by binding to:   (A) Actin   (B) Myosin   (C) Troponin   (D) Tropomyosin
output: ['(C) Troponin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Actin  (B) Myosin  (C) Troponin  (D) Tropomyosin <> possible answers', '  Calcium ions triggers muscle contraction by binding to: <> context']