Question: who became the most successful female climber of mount everest
[{'answer': 'Lhakpa Sherpa', 'provenance': [{'wikipedia_id': '50511396', 'title': 'Lhakpa Sherpa', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50511396', 'title': 'Lhakpa Sherpa', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 0.844164124343837, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16939681702100742373}, 'section': 'Section::::Abstract.'}]}]