input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** For posterior abutment with acceptable crown root ratios, average crown length, normal esthetic requirement, retainer of choice is:   (A) Full crown   (B) Partial veneer crown   (C) Resin veneer   (D) PFM
output: ['(B) Partial veneer crown <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Full crown  (B) Partial veneer crown  (C) Resin veneer  (D) PFM <> possible answers', '  For posterior abutment with acceptable crown root ratios, average crown length, normal esthetic requirement, retainer of choice is: <> context']