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

In this case, the feature n_r_ecg_p_08 has two possible categories: 'no' and 'yes'. For patients who do not have chronic heart failure (target class no), the only possible value for n_r_ecg_p_08 is 'no'. For patients who do have chronic heart failure (target class yes), the only possible value for n_r_ecg_p_08 is 'yes'. Therefore, the dictionary has the single value "no" for target class no, and the single value "yes" for target class yes.