Question: how long is a round in ufc fight
[{'answer': 'no longer than five minutes', 'provenance': [{'wikipedia_id': '169660', 'title': 'Ultimate Fighting Championship', 'start_paragraph_id': 114, 'start_character': 170, 'end_paragraph_id': 114, 'end_character': 197, 'bleu_score': 1.0, 'section': 'Section::::Rules.:Rounds.\n'}]}, {'provenance': [{'wikipedia_id': '169660', 'title': 'Ultimate Fighting Championship', 'start_paragraph_id': 114, 'start_character': 0, 'end_paragraph_id': 114, 'end_character': 754, 'bleu_score': 0.8955122139855071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13823942933850182207}, 'section': 'Section::::Rules.:Rounds.\n'}]}]