Question: who owned whole foods before amazon bought it
[{'answer': 'John Mackey', 'provenance': [{'wikipedia_id': '620343', 'title': 'Whole Foods Market', 'start_paragraph_id': 5, 'start_character': 9, 'end_paragraph_id': 5, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::History.:Early years.\n'}]}]