Question: medical term for a blood test to measure the levels of oxygen in the blood
[{'answer': 'blood gas test', 'provenance': [{'wikipedia_id': '336557', 'title': 'Blood test', 'start_paragraph_id': 10, 'start_character': 124, 'end_paragraph_id': 10, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Types of tests.:Biochemical analysis.\n'}]}, {'provenance': [{'wikipedia_id': '336557', 'title': 'Blood test', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 402, 'bleu_score': 0.9694566079002921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13368006118082350326}, 'section': 'Section::::Types of tests.:Biochemical analysis.\n'}]}]