Question: how much did the scottish independence referendum cost
[{'answer': '£ 15.85 million', 'provenance': [{'wikipedia_id': '24301729', 'title': '2014 Scottish independence referendum', 'start_paragraph_id': 45, 'start_character': 536, 'end_paragraph_id': 45, 'end_character': 551, 'bleu_score': 1.0, 'section': 'Section::::Administration.:Campaign structures.:Cost and funding.\n'}]}, {'provenance': [{'wikipedia_id': '24301729', 'title': '2014 Scottish independence referendum', 'start_paragraph_id': 45, 'start_character': 0, 'end_paragraph_id': 45, 'end_character': 550, 'bleu_score': 0.978138775770484, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11222359939919265343}, 'section': 'Section::::Administration.:Campaign structures.:Cost and funding.\n'}]}]