Question: when do the nba season start this year
[{'answer': 'October 17 , 2017', 'provenance': [{'wikipedia_id': '53555999', 'title': '2017–18 NBA season', 'start_paragraph_id': 36, 'start_character': 28, 'end_paragraph_id': 36, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Regular season.\n'}]}, {'provenance': [{'wikipedia_id': '53555999', 'title': '2017–18 NBA season', 'start_paragraph_id': 1, 'start_character': 27, 'end_paragraph_id': 1, 'end_character': 690, 'bleu_score': 0.6622422898972391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15050110111517760882}, 'section': 'Section::::Abstract.'}]}]