```json
{
	"no": ["no"],  
	"yes": ["yes"]  
}
```

Based on the feature description, n_p_ecg_p_10 indicates whether the patient had Complete Left Bundle Branch Block (LBBB) on the Electrocardiogram (ECG) at the time of admission to the hospital. 

To determine if the patient has chronic heart failure, we are interested in whether the patient has LBBB or not. If the patient has LBBB on the ECG at admission, it can be indicative of chronic heart failure.

In this case, the feature has two categories: 'no' and 'yes'. 'no' indicates that the patient does not have Complete LBBB on the ECG, while 'yes' indicates that the patient does have LBBB on the ECG.

The dictionary above shows the possible values of the feature for each target class. The target class 'no' only has the value 'no', indicating that patients without chronic heart failure do not have LBBB on the ECG. The target class 'yes' only has the value 'yes', indicating that patients with chronic heart failure have LBBB on the ECG.