Question: before mount everest was discovered what was the tallest mountain in the world
[{'answer': 'Kangchenjunga', 'provenance': [{'wikipedia_id': '10374104', 'title': 'List of past presumed highest mountains', 'start_paragraph_id': 5, 'start_character': 12, 'end_paragraph_id': 5, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10374104', 'title': 'List of past presumed highest mountains', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 121, 'bleu_score': 0.6978429290017011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14289162519203572517}, 'section': 'Section::::Abstract.'}]}]