Question: the medical procedure for drawing a sample of venous blood into a vacuum tube is known as
[{'answer': 'venipuncture', 'provenance': [{'wikipedia_id': '234819', 'title': 'Venipuncture', 'start_paragraph_id': 1, 'start_character': 13, 'end_paragraph_id': 1, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '234819', 'title': 'Venipuncture', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 446, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 594204442387278377}, 'section': 'Section::::Abstract.'}]}]