Question: how many songs are on vices and virtues
[{'answer': '10', 'provenance': [{'wikipedia_id': '29940738', 'title': 'Vices & Virtues', 'start_paragraph_id': 9, 'start_character': 1064, 'end_paragraph_id': 9, 'end_character': 1066, 'bleu_score': 1.0, 'section': 'Section::::Recording and production.\n'}]}]