Question: who did otto go with to north korea
[{'answer': 'Young Pioneer Tours', 'provenance': [{'wikipedia_id': '49193057', 'title': 'Otto Warmbier', 'start_paragraph_id': 9, 'start_character': 192, 'end_paragraph_id': 9, 'end_character': 211, 'bleu_score': 1.0, 'section': 'Section::::North Korea.\n'}]}, {'provenance': [{'wikipedia_id': '49193057', 'title': 'Otto Warmbier', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 570, 'bleu_score': 0.71682528720682, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 965303788144431733}, 'section': 'Section::::North Korea.\n'}]}]