Question: who wrote the original story of phantom of the opera
[{'answer': 'Gaston Leroux', 'provenance': [{'wikipedia_id': '162189', 'title': 'The Phantom of the Opera', 'start_paragraph_id': 1, 'start_character': 84, 'end_paragraph_id': 1, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '162189', 'title': 'The Phantom of the Opera', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 724, 'bleu_score': 0.926768566363364, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8397163549657141511}, 'section': 'Section::::Abstract.'}]}]