Question: when does the 2017-18 nba regular season start
[{'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': 0.6375716469390881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18394478270773040627}, 'section': 'Section::::Abstract.'}]}]