Question: what is the normal oxygen level in the human body
[{'answer': '95 -- 100 percent'}, {'provenance': [{'wikipedia_id': '22419890', 'title': 'Oxygen saturation (medicine)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 903, 'bleu_score': 0.9204761496025451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11477363903235847480}, 'section': 'Section::::Abstract.'}]}]