input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Metal oxides are added in porcelain provide all except   (A) Strength   (B) Improve bonding   (C) Cosmetic   (D) Impart colour
output: ['(A) Strength <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Strength  (B) Improve bonding  (C) Cosmetic  (D) Impart colour <> possible answers', '  Metal oxides are added in porcelain provide all except <> context']