input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Lingual bar is used in conditions where:   (A) Lingual sulcus is deep   (B) Lingual sulcus is shallow   (C) When splinting of adjacent teeth is require   (D) When abutment teeth have poor bony support
output: ['(A) Lingual sulcus is deep <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Lingual sulcus is deep  (B) Lingual sulcus is shallow  (C) When splinting of adjacent teeth is require  (D) When abutment teeth have poor bony support <> possible answers', '  Lingual bar is used in conditions where: <> context']