Question: when does harry dresden become the winter knight
[{'answer': 'Changes', 'provenance': [{'wikipedia_id': '2672722', 'title': 'Harry Dresden', 'start_paragraph_id': 14, 'start_character': 1, 'end_paragraph_id': 14, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Powers and abilities.:Magic.\n'}]}, {'provenance': [{'wikipedia_id': '2672722', 'title': 'Harry Dresden', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 795, 'bleu_score': 0.985662154730604, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10991112615355128421}, 'section': 'Section::::Powers and abilities.:Magic.\n'}]}]