Question: where did the night of the long knives take place
[{'answer': 'Nazi Germany', 'provenance': [{'wikipedia_id': '53901', 'title': 'Night of the Long Knives', 'start_paragraph_id': 1, 'start_character': 158, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]