Question: when was the affordable care act voted on
[{'answer': '2009', 'provenance': [{'wikipedia_id': '25226624', 'title': 'Patient Protection and Affordable Care Act', 'start_paragraph_id': 90, 'start_character': 165, 'end_paragraph_id': 90, 'end_character': 169, 'bleu_score': 1.0, 'section': 'Section::::Legislative history.:Background.\n'}]}]