Question: when did the modern era of basketball start
[{'answer': 'June 6 , 1946', 'provenance': [{'wikipedia_id': '22093', 'title': 'National Basketball Association', 'start_paragraph_id': 2, 'start_character': 43, 'end_paragraph_id': 2, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]