input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The clot formed is not stable unless extensive cross-linking occurs. This extensive cross-linking of blood clot is done by:   (A) Plasmin   (B) Thrombin   (C) HMWK   (D) Factor XIII
output: ['(D) Factor XIII <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Plasmin  (B) Thrombin  (C) HMWK  (D) Factor XIII <> possible answers', '  The clot formed is not stable unless extensive cross-linking occurs. This extensive cross-linking of blood clot is done by: <> context']