Based on my prior knowledge, a Type 2 Second-degree AV block (Mobitz II/Hay) on an ECG at the time of admission to the hospital is not directly indicative of chronic heart failure. Therefore, I would expect the feature value to be "no" for both cases where chronic heart failure is present (target class "yes") and where it is not present (target class "no").

Based on this analysis, the dictionary representing the relationship between the feature "n_p_ecg_p_05" and the task of determining chronic heart failure would look like:

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

This indicates that the feature value for "n_p_ecg_p_05" is always "no" for both target classes "yes" and "no".