Question: who did john fox coach before the bears
[{'answer': 'Denver Broncos', 'provenance': [{'wikipedia_id': '2263508', 'title': 'John Fox (American football)', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 143, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]