Question: when did the phantom of the opera take place
[{'answer': 'the 1890s'}, {'provenance': [{'wikipedia_id': '162189', 'title': 'The Phantom of the Opera', 'start_paragraph_id': 7, 'start_character': 21, 'end_paragraph_id': 7, 'end_character': 869, 'bleu_score': 0.943548857350997, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4763966937919125577}, 'section': 'Section::::Plot summary.\n'}]}]