Question: who came up with the balance of power theory
[{'answer': 'David Hume', 'provenance': [{'wikipedia_id': '4880551', 'title': 'Balance of power (international relations)', 'start_paragraph_id': 4, 'start_character': 100, 'end_paragraph_id': 4, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '4880551', 'title': 'Balance of power (international relations)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 281, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10824285353980955969}, 'section': 'Section::::History.\n'}]}]