Question: when does the next how to train your dragon movie come out
[{'answer': 'around 2019'}, {'provenance': [{'wikipedia_id': '5829721', 'title': 'How to Train Your Dragon', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 191, 'bleu_score': 0.506634404707187, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2929257535527723547}, 'section': 'Section::::Abstract.'}]}]