Question: when is season 2 for trollhunters coming out
[{'answer': 'December 15 , 2017', 'provenance': [{'wikipedia_id': '39593077', 'title': 'Trollhunters: Tales of Arcadia', 'start_paragraph_id': 48, 'start_character': 269, 'end_paragraph_id': 48, 'end_character': 287, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}, {'provenance': [{'wikipedia_id': '39593077', 'title': 'Trollhunters: Tales of Arcadia', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 273, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9980711514251408379}, 'section': 'Section::::Abstract.'}]}]