Question: when do you have to smog a car in california
[{'answer': 'every two years', 'provenance': [{'wikipedia_id': '31116608', 'title': 'California Smog Check Program', 'start_paragraph_id': 1, 'start_character': 124, 'end_paragraph_id': 1, 'end_character': 139, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31116608', 'title': 'California Smog Check Program', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1029, 'bleu_score': 0.9878413801697931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2172204966320762801}, 'section': 'Section::::Abstract.'}]}]