input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Bacteria responsible for post-operative endocarditis is:   (A) Streptococcus viridans.   (B) Staphylococcus epidermidis.   (C) Streptococcus aureus.   (D) Streptococcus pneumoniae.
output: ['(B) Staphylococcus epidermidis. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Streptococcus viridans.  (B) Staphylococcus epidermidis.  (C) Streptococcus aureus.  (D) Streptococcus pneumoniae. <> possible answers', '  Bacteria responsible for post-operative endocarditis is: <> context']