```json
{
    "no": ["N"],
    "yes": ["Y"]
}
```
Based on prior knowledge, the exercise-induced angina feature (ExerciseAngina) can be useful in predicting heart disease. If a patient experiences exercise-induced angina (value 'Y') during coronary angiography, it indicates a higher likelihood of heart disease. On the other hand, if the patient does not experience exercise-induced angina (value 'N'), it indicates a lower likelihood of heart disease. Therefore, the presence or absence of exercise-induced angina can be an important predictor of heart disease.