input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following structures is not found in a living pulp?   (A) Collagen fibres   (B) Haversian fibres   (C) Non-myelinated nerve fibres   (D) Reticulum
output: ['(B) Haversian fibres <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Collagen fibres  (B) Haversian fibres  (C) Non-myelinated nerve fibres  (D) Reticulum <> possible answers', '  Which of the following structures is not found in a living pulp? <> context']