Question: where does the united states get its electricity
[{'answer': 'coal ( 39 % )', 'provenance': [{'wikipedia_id': '24074449', 'title': 'Electricity sector of the United States', 'start_paragraph_id': 4, 'start_character': 50, 'end_paragraph_id': 4, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'nuclear ( 19 % )', 'provenance': [{'wikipedia_id': '24074449', 'title': 'Electricity sector of the United States', 'start_paragraph_id': 4, 'start_character': 81, 'end_paragraph_id': 4, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Hydro ( 6 % )', 'provenance': [{'wikipedia_id': '24074449', 'title': 'Electricity sector of the United States', 'start_paragraph_id': 4, 'start_character': 96, 'end_paragraph_id': 4, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'natural gas ( 27 % )'}, {'answer': 'other renewables ( 7 % )'}, {'provenance': [{'wikipedia_id': '24074449', 'title': 'Electricity sector of the United States', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 481, 'bleu_score': 0.9277431284700741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6928779952432506239}, 'section': 'Section::::Abstract.'}]}]