Based on prior knowledge, Third-degree AV block on ECG at the time of admission to the hospital (n_p_ecg_p_06 feature) can potentially be indicative of chronic heart failure in the patient. Now, let's analyze the relationship between this feature and the target variable:

If the patient has a Third-degree AV block on ECG at the time of admission to the hospital (n_p_ecg_p_06 = 'yes'), it is probable that the patient may have chronic heart failure. However, if the patient does not have a Third-degree AV block on ECG (n_p_ecg_p_06 = 'no'), it does not necessarily mean that the patient does not have chronic heart failure. Therefore, the presence of a Third-degree AV block on ECG can be considered as a possible indicator of chronic heart failure but is not a definitive confirmation.

Now, let's create the dictionary as requested:

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

In this case, since the feature is binary and has only two possible values ('no' or 'yes'), we include both values in the respective lists for each target class.