```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```
From the feature description, the n_p_ecg_p_11 feature has two categories: 'no' and 'yes'. Based on the task, we need to determine if the patient's myocardial infarction complications data indicates chronic heart failure or not. 

Since the feature only has two categories, 'no' and 'yes', we can directly map these categories to the target classes 'no' and 'yes'. The values of feature n_p_ecg_p_11 for the target class 'no' would be ["no"], and for the target class 'yes', the values of feature n_p_ecg_p_11 would be ["yes"].