Question: where does the left coronary artery supply blood to
[{'answer': 'left side of the heart', 'provenance': [{'wikipedia_id': '146642', 'title': 'Coronary circulation', 'start_paragraph_id': 6, 'start_character': 125, 'end_paragraph_id': 6, 'end_character': 147, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'answer': 'left atrium and ventricle', 'provenance': [{'wikipedia_id': '146642', 'title': 'Coronary circulation', 'start_paragraph_id': 7, 'start_character': 78, 'end_paragraph_id': 7, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'answer': 'interventricular septum', 'provenance': [{'wikipedia_id': '146642', 'title': 'Coronary circulation', 'start_paragraph_id': 7, 'start_character': 113, 'end_paragraph_id': 7, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'provenance': [{'wikipedia_id': '146642', 'title': 'Coronary circulation', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 1134, 'bleu_score': 0.988668097924812, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3987511349899077030}, 'section': 'Section::::Structure.\n'}]}]