Based on prior knowledge, it is difficult to determine the relationship between the feature "GT_POST" (Paroxysms of ventricular tachycardia at the time of admission to intensive care unit) and the task of determining chronic heart failure (complications of myocardial infarction). The presence or absence of paroxysms of ventricular tachycardia may or may not be indicative of chronic heart failure.

However, we can still create a dictionary listing the possible values of the feature "GT_POST" for each target class:

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

Since "GT_POST" is a categorical variable with values "no" and "yes", we can include both of these values in the dictionary for each target class.