Question: where does most of earth's energy come from
[{'answer': 'oil', 'provenance': [{'wikipedia_id': '9058630', 'title': 'World energy consumption', 'start_paragraph_id': 3, 'start_character': 791, 'end_paragraph_id': 3, 'end_character': 794, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9058630', 'title': 'World energy consumption', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 265, 'bleu_score': 0.7640353032903401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14493015673322316918}, 'section': 'Section::::Overview.:Trends.\n'}]}]