Question: when was the consumer financial protection bureau established
[{'answer': 'July 21 , 2011', 'provenance': [{'wikipedia_id': '30814208', 'title': 'Consumer Financial Protection Bureau', 'start_paragraph_id': 13, 'start_character': 37, 'end_paragraph_id': 13, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]