Based on prior knowledge, it is not possible to directly infer whether a patient with myocardial infarction complications has chronic heart failure solely based on the feature "GT_POST" (Paroxysms of ventricular tachycardia at the time of admission to intensive care unit). This feature does not provide explicit information about chronic heart failure.

However, I can still analyze the relationship between the feature and the target variable and create a dictionary based on the available information.

Here is the dictionary:

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

Since the feature "GT_POST" is a categorical variable with categories ["no", "yes"], the possible values for both target classes are "no" and "yes" respectively. Please note that the list for each target class contains only one possible value, as this feature alone does not provide sufficient information to predict chronic heart failure accurately.