Question: who sold more albums kanye or taylor swift
[{'answer': 'Kanye West', 'provenance': [{'wikipedia_id': '1291598', 'title': 'List of best-selling music artists', 'start_paragraph_id': 8, 'start_character': 686, 'end_paragraph_id': 8, 'end_character': 696, 'bleu_score': 1.0, 'section': 'Section::::Definitions.\n'}]}]