Question: what is the tallest mountain in the north america
[{'answer': 'Denali', 'provenance': [{'wikipedia_id': '11984974', 'title': 'List of the highest major summits of North America', 'start_paragraph_id': 6, 'start_character': 31, 'end_paragraph_id': 6, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]