Question: when does season 3 of legends of tomorrow come out
[{'answer': 'October 10 , 2017', 'provenance': [{'wikipedia_id': '57914701', 'title': 'Legends of Tomorrow (season 3)', 'start_paragraph_id': 43, 'start_character': 33, 'end_paragraph_id': 43, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Release.:Broadcast.\n'}]}, {'provenance': [{'wikipedia_id': '57914701', 'title': 'Legends of Tomorrow (season 3)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 668, 'bleu_score': 0.9579655027162681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6596574454436862535}, 'section': 'Section::::Abstract.'}]}]