Question: where is the x factor final 2017 filmed
[{'answer': 'Excel Centre , London', 'provenance': [{'wikipedia_id': '52569582', 'title': 'The X Factor (British series 14)', 'start_paragraph_id': 23, 'start_character': 1076, 'end_paragraph_id': 23, 'end_character': 1100, 'bleu_score': 1.0, 'section': 'Section::::Live shows.\n'}]}, {'provenance': [{'wikipedia_id': '52569582', 'title': 'The X Factor (British series 14)', 'start_paragraph_id': 23, 'start_character': 8, 'end_paragraph_id': 23, 'end_character': 1168, 'bleu_score': 0.9326327989317681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10110894875370520353}, 'section': 'Section::::Live shows.\n'}]}]