Question: when was harry potter and the deathly hallows part 2 released
[{'answer': '2011', 'provenance': [{'wikipedia_id': '31941988', 'title': 'Harry Potter and the Deathly Hallows – Part 2', 'start_paragraph_id': 1, 'start_character': 51, 'end_paragraph_id': 1, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31941988', 'title': 'Harry Potter and the Deathly Hallows – Part 2', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 530, 'bleu_score': 0.883298848022196, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6254071004257212117}, 'section': 'Section::::Abstract.'}]}]