Question: when is how to train your dragon hidden world coming out
[{'answer': 'February 22 , 2019', 'provenance': [{'wikipedia_id': '39446286', 'title': 'How to Train Your Dragon: The Hidden World', 'start_paragraph_id': 39, 'start_character': 572, 'end_paragraph_id': 39, 'end_character': 590, 'bleu_score': 1.0, 'section': 'Section::::Release and marketing.\n'}]}]