Question: who won best boy band of the year
[{'answer': 'BTS', 'provenance': [{'wikipedia_id': '47285968', 'title': 'List of awards and nominations received by BTS', 'start_paragraph_id': 0, 'start_character': 43, 'end_paragraph_id': 0, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]