Based on my prior knowledge, the feature nr_07, Ventricular fibrillation in the anamnesis, is a categorical variable with only one category, which is 'no'. This means that if a patient has no ventricular fibrillation in their medical history, the value of nr_07 will be 'no'.

Since there is only one category, there won't be a distinction between 'no' and 'yes' values of nr_07 for chronic heart failure. However, to generate the dictionary as requested, we can include the 'no' category in both 'no' and 'yes' lists, as the feature value 'no' is relevant for both classes.

Based on this analysis, the dictionary would be as follows:

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

In this case, the values in both lists are the same, but it covers the requirement of having a non-empty list for each target class.