Question: when does the next marvel netflix series come out
[{'answer': 'September 7 , 2018', 'provenance': [{'wikipedia_id': '42721570', 'title': 'List of Marvel Cinematic Universe television series', 'start_paragraph_id': 38, 'start_character': 41, 'end_paragraph_id': 38, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Netflix series.:"Marvel\'s Iron Fist" (2017–2018).\n'}]}]