Question: where does the united states energy come from
[{'answer': 'petroleum', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 4, 'start_character': 114, 'end_paragraph_id': 4, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'coal', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 4, 'start_character': 134, 'end_paragraph_id': 4, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'natural gas', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 4, 'start_character': 153, 'end_paragraph_id': 4, 'end_character': 164, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Nuclear power'}, {'answer': 'hydroelectric dams', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 5, 'start_character': 75, 'end_paragraph_id': 5, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'biomass', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 5, 'start_character': 98, 'end_paragraph_id': 5, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'wind power', 'provenance': [{'wikipedia_id': '7635170', 'title': 'Energy in the United States', 'start_paragraph_id': 85, 'start_character': 3, 'end_paragraph_id': 85, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Electricity.:Renewable energy.\n'}]}, {'answer': 'geothermal and solar energy'}]