Question: when was how to train your dragon 2 released
[{'answer': '2014', 'provenance': [{'wikipedia_id': '32220715', 'title': 'How to Train Your Dragon 2', 'start_paragraph_id': 1, 'start_character': 32, 'end_paragraph_id': 1, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32220715', 'title': 'How to Train Your Dragon 2', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 841, 'bleu_score': 0.8084328736232631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18122120920863557855}, 'section': 'Section::::Abstract.'}]}]