Question: power supply at home is ac or dc
[{'answer': 'AC', 'provenance': [{'wikipedia_id': '175959', 'title': 'Mains electricity', 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 217, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '175959', 'title': 'Mains electricity', 'start_paragraph_id': 1, 'start_character': 169, 'end_paragraph_id': 1, 'end_character': 454, 'bleu_score': 0.7795377343512411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 467889427931178532}, 'section': 'Section::::Abstract.'}]}]