Based on prior knowledge, chronic bronchitis can be a risk factor for chronic heart failure. Medical research suggests that chronic bronchitis, which is characterized by inflammation and damage to the airways, can lead to cardiovascular complications, including heart failure.

Therefore, to analyze the relationship between the feature "zab_leg_01" (chronic bronchitis in the anamnesis) and the presence of chronic heart failure (target variable), we would check if patients with a history of chronic bronchitis tend to have a higher likelihood of chronic heart failure compared to those without.

Here is the dictionary representing the relationship between the feature "zab_leg_01" and chronic heart failure:

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

In this case, since the feature "zab_leg_01" is a categorical variable with only two categories, "no" and "yes," we can determine that patients with chronic bronchitis in their medical history may have a higher likelihood of chronic heart failure. The values in the dictionary represent the possible categories of the feature for each target class.