Question: when does the how to train your dragon 3 movie come out
[{'answer': 'March 1 , 2019', 'provenance': [{'wikipedia_id': '39446286', 'title': 'How to Train Your Dragon: The Hidden World', 'start_paragraph_id': 39, 'start_character': 488, 'end_paragraph_id': 39, 'end_character': 502, 'bleu_score': 1.0, 'section': 'Section::::Release and marketing.\n'}]}]