Question: who sings on the phantom of the opera soundtrack
[{'answer': 'Gerard Butler', 'provenance': [{'wikipedia_id': '5238898', 'title': 'The Phantom of the Opera (2004 soundtrack)', 'start_paragraph_id': 13, 'start_character': 159, 'end_paragraph_id': 13, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Accomplishments and certifications.\n'}]}, {'answer': 'Emmy Rossum', 'provenance': [{'wikipedia_id': '5238898', 'title': 'The Phantom of the Opera (2004 soundtrack)', 'start_paragraph_id': 5, 'start_character': 35, 'end_paragraph_id': 5, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Personnel.\n'}]}, {'answer': 'Patrick Wilson', 'provenance': [{'wikipedia_id': '5238898', 'title': 'The Phantom of the Opera (2004 soundtrack)', 'start_paragraph_id': 5, 'start_character': 48, 'end_paragraph_id': 5, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Personnel.\n'}]}]