input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Improved marginal adaptation in a composite restoration can be achieved by:   (A) Moisture free environment   (B) Application of pressure   (C) Acid etching   (D) Continued packing
output: ['(C) Acid etching <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Moisture free environment  (B) Application of pressure  (C) Acid etching  (D) Continued packing <> possible answers', '  Improved marginal adaptation in a composite restoration can be achieved by: <> context']