Question: what is north korea's relationship with the united states
[{'answer': 'hostile', 'provenance': [{'wikipedia_id': '106427', 'title': 'North Korea–United States relations', 'start_paragraph_id': 1, 'start_character': 217, 'end_paragraph_id': 1, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '106427', 'title': 'North Korea–United States relations', 'start_paragraph_id': 1, 'start_character': 131, 'end_paragraph_id': 1, 'end_character': 734, 'bleu_score': 0.8353084174050941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8648115123021873611}, 'section': 'Section::::Abstract.'}]}]