Question: which territory held a referendum on independence from the united kingdom on 18 september 2014
[{'answer': 'Scottish', 'provenance': [{'wikipedia_id': '24301729', 'title': '2014 Scottish independence referendum', 'start_paragraph_id': 0, 'start_character': 5, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24301729', 'title': '2014 Scottish independence referendum', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 472, 'bleu_score': 0.9083574911373701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2651819576413861050}, 'section': 'Section::::Abstract.'}]}]