Based on prior knowledge, the relationship between the feature "zab_leg_03" (Bronchial asthma in the anamnesis) and the presence of chronic heart failure (target variable) might be as follows:

- If the value of "zab_leg_03" is "no", it is less likely to indicate chronic heart failure.
- If the value of "zab_leg_03" is "yes", it might have some association with chronic heart failure.

However, it is important to note that without further information or data analysis, we cannot definitively determine the relationship between the feature and the presence of chronic heart failure.

Based on the analysis above, the dictionary representing the relationship between the feature "zab_leg_03" and the target variable "chronic heart failure" would be as follows:

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

Please note that this dictionary includes all possible values of the feature "zab_leg_03" for each target class, even if they are difficult to predict.

If further analysis or data is provided, the dictionary can be updated accordingly.