Question: what is the tallest mountain in the world from base to summit
[{'answer': 'Mauna Kea', 'provenance': [{'wikipedia_id': '267366', 'title': 'Mauna Kea', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '267366', 'title': 'Mauna Kea', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 844, 'bleu_score': 0.6180462605220011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9617799600453619970}, 'section': 'Section::::Abstract.'}]}]