Question: this term is used to describe the first stage of coronary heart disease
[{'answer': 'stable angina', 'provenance': [{'wikipedia_id': '5876', 'title': 'Coronary artery disease', 'start_paragraph_id': 1, 'start_character': 256, 'end_paragraph_id': 1, 'end_character': 269, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5876', 'title': 'Coronary artery disease', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 178, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15323336521952378360}, 'section': 'Section::::Signs and symptoms.\n'}]}]