Question: who is the chief of state in south korea
[{'answer': 'Moon Jae - in', 'provenance': [{'wikipedia_id': '98630', 'title': 'President of South Korea', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '98630', 'title': 'President of South Korea', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 331, 'bleu_score': 0.9657992495762461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17642790788064873605}, 'section': 'Section::::Abstract.'}]}]