Question: when will the flash season 4 be released
[{'answer': 'October 10 , 2017', 'provenance': [{'wikipedia_id': '53527130', 'title': 'The Flash (season 4)', 'start_paragraph_id': 45, 'start_character': 27, 'end_paragraph_id': 45, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Release.:Broadcast.\n'}]}, {'provenance': [{'wikipedia_id': '53527130', 'title': 'The Flash (season 4)', 'start_paragraph_id': 45, 'start_character': 0, 'end_paragraph_id': 45, 'end_character': 54, 'bleu_score': 0.6930977286178771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13332433415123377015}, 'section': 'Section::::Release.:Broadcast.\n'}]}, {'provenance': [{'wikipedia_id': '53527130', 'title': 'The Flash (season 4)', 'section': 'Section::::Release.:Broadcast.\n', 'start_paragraph_id': 45, 'end_paragraph_id': 45, 'meta': {'evidence_span': ['The season began airing on October 10, 2017, on The CW in the United States, and on CTV in Canada', 'October 10, 2017', 'The season began airing on October 10, 2017, on The CW in the United States, and on CTV in Canada. The season concluded on May 22, 2018. Sky One acquired the rights to air the season in the UK & Ireland, airing it alongside the other Arrowverse shows. The season premiered October 17.']}}]}]