Question: Which mountain is taller, Istor-o-Nal or Siguang Ri?
{'answer': 'Istor-o-Nal', 'supporting_facts': [['Istor-o-Nal', 0], ['Istor-o-Nal', 1], ['Istor-o-Nal', 4], ['Siguang Ri', 1]]}