Question: where does the energy in a power station come from
[{'answer': 'fossil fuels', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 503, 'end_paragraph_id': 1, 'end_character': 515, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'nuclear power', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 600, 'end_paragraph_id': 1, 'end_character': 613, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'solar', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 659, 'end_paragraph_id': 1, 'end_character': 664, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'wind', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 666, 'end_paragraph_id': 1, 'end_character': 670, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'wave', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 672, 'end_paragraph_id': 1, 'end_character': 676, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'hydroelectric', 'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 681, 'end_paragraph_id': 1, 'end_character': 694, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '212141', 'title': 'Power station', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 694, 'bleu_score': 0.875650800537845, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6708032196113317098}, 'section': 'Section::::Abstract.'}]}]