Question: what is the normal clotting time for blood
[{'answer': '8 to 15 minutes', 'provenance': [{'wikipedia_id': '17565412', 'title': 'Clotting time', 'start_paragraph_id': 2, 'start_character': 199, 'end_paragraph_id': 2, 'end_character': 214, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17565412', 'title': 'Clotting time', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 214, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14253373009005995024}, 'section': 'Section::::Abstract.'}]}]