Based on prior knowledge, we can analyze the relationship between the feature "zab_leg_01" (Chronic bronchitis in the anamnesis) and the task of determining if the patient shows chronic heart failure.

To determine whether the patient shows chronic heart failure, we would need to study the relationship between chronic bronchitis and chronic heart failure. However, this relationship is not clear-cut and may vary depending on various factors such as the severity of bronchitis, underlying health conditions, and individual differences in patients.

Since the relationship between "zab_leg_01" and chronic heart failure is uncertain, it would be inappropriate to make definitive conclusions without additional information or context.

Considering this, I will create a dictionary with the available information in the following format:

```json
{
	"no": ["no"],
	"yes": ["yes"]
}
```
Note that the value for "zab_leg_01" is represented as a list of strings, containing the possible values for each target class. In this case, we have "no" and "yes" as the potential values for "zab_leg_01" for the respective target classes.