Question: where does the blood in the pulmonary artery go
[{'answer': 'lungs', 'provenance': [{'wikipedia_id': '509921', 'title': 'Pulmonary artery', 'start_paragraph_id': 1, 'start_character': 133, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '509921', 'title': 'Pulmonary artery', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 344, 'bleu_score': 0.9645876452711911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1116968501609580314}, 'section': 'Section::::Abstract.'}]}]