Question: when does dc legends of tomorrow come out
[{'answer': 'October 10 , 2017'}, {'provenance': [{'wikipedia_id': '46299779', 'title': 'Legends of Tomorrow', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 643, 'bleu_score': 0.655291620679575, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7616732708267177779}, 'section': 'Section::::Abstract.'}]}]