Based on prior knowledge, the feature ZSN_A represents the presence of chronic heart failure in the patient's medical history. To analyze the relationship between ZSN_A and the presence of chronic heart failure as the target variable, we can examine how different categories of ZSN_A correspond to the occurrence of chronic heart failure.

Based on the provided feature description, the possible categories of ZSN_A are:
- "there is no chronic heart failure"
- "I stage"
- "IIА stage"
- "IIB stage"

To determine how each category relates to the presence of chronic heart failure, we need more information or data about the relationship between ZSN_A and the target variable. Without additional data, it is difficult to make accurate predictions or draw conclusions about the relationship between ZSN_A and chronic heart failure in this specific context.

However, to create the requested dictionary, we can assume the following possibilities:

```json
{
	"no": ["there is no chronic heart failure"],  
	"yes": ["I stage", "IIА stage", "IIB stage"]
}
```

Please note that these assumptions are made based on the limited information provided and should be verified with more data or domain knowledge to ensure accuracy.