Question: when did the affordable care act became effective
[{'answer': '2014', 'provenance': [{'wikipedia_id': '25226624', 'title': 'Patient Protection and Affordable Care Act', 'start_paragraph_id': 2, 'start_character': 46, 'end_paragraph_id': 2, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25226624', 'title': 'Patient Protection and Affordable Care Act', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1059, 'bleu_score': 0.9786516031679311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9579937419846886362}, 'section': 'Section::::Abstract.'}]}]