Question: which nation introduced ombudsman for the first time
[{'answer': 'China', 'provenance': [{'wikipedia_id': '26289198', 'title': 'Ombudsman', 'start_paragraph_id': 5, 'start_character': 51, 'end_paragraph_id': 5, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Origins and etymology.\n'}]}, {'answer': 'Korea', 'provenance': [{'wikipedia_id': '26289198', 'title': 'Ombudsman', 'start_paragraph_id': 5, 'start_character': 97, 'end_paragraph_id': 5, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Origins and etymology.\n'}]}, {'provenance': [{'wikipedia_id': '26289198', 'title': 'Ombudsman', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 752, 'bleu_score': 0.9364200532619801, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9805888668353128594}, 'section': 'Section::::Origins and etymology.\n'}]}]