Question: what are the neighboring countries of south korea
[{'answer': 'North Korea', 'provenance': [{'wikipedia_id': '27021', 'title': 'Geography of South Korea', 'start_paragraph_id': 1, 'start_character': 189, 'end_paragraph_id': 1, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27021', 'title': 'Geography of South Korea', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 670, 'bleu_score': 0.6315534872528611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16557498457638729204}, 'section': 'Section::::Abstract.'}]}]