Question: where was britains got talent final 2017 held
[{'answer': 'Elstree Studios', 'provenance': [{'wikipedia_id': '8517686', 'title': "Britain's Got Talent", 'start_paragraph_id': 20, 'start_character': 494, 'end_paragraph_id': 20, 'end_character': 509, 'bleu_score': 1.0, 'section': 'Section::::Format.:Semi-finals and Final.\n'}]}, {'provenance': [{'wikipedia_id': '8517686', 'title': "Britain's Got Talent", 'start_paragraph_id': 61, 'start_character': 0, 'end_paragraph_id': 61, 'end_character': 1021, 'bleu_score': 0.9286380329512931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2344369112521341428}, 'section': 'Section::::Series overview.:Series 11 (2017).\n'}]}]