```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```
Based on the given feature, the only possible value for the feature "n_p_ecg_p_11" is "yes". Therefore, in the case of chronic heart failure, the myocardial infarction complications data will show "yes" for the feature "n_p_ecg_p_11". On the other hand, if there is no chronic heart failure, the feature value will be "no".