Question: where does the original flow of energy on earth come from
[{'answer': 'core', 'provenance': [{'wikipedia_id': '9228', 'title': 'Earth', 'start_paragraph_id': 3, 'start_character': 552, 'end_paragraph_id': 3, 'end_character': 556, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9228', 'title': 'Earth', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 586, 'bleu_score': 0.862875321313703, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4413618133720186236}, 'section': 'Section::::Physical characteristics.:Heat.\n'}]}]