Question: how long does the effect of midazolam last
[{'answer': 'between one and six hours', 'provenance': [{'wikipedia_id': '646748', 'title': 'Midazolam', 'start_paragraph_id': 1, 'start_character': 609, 'end_paragraph_id': 1, 'end_character': 634, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '646748', 'title': 'Midazolam', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 634, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1792879177424642762}, 'section': 'Section::::Abstract.'}]}]