Based on prior knowledge, we can analyze the relationship between the feature "GT_POST" and the presence of chronic heart failure in myocardial infarction complications data.

1. If the feature value "GT_POST" is "no", it indicates that there were no paroxysms of ventricular tachycardia at the time of admission to the intensive care unit. In this case, the patient is less likely to have chronic heart failure.

2. If the feature value "GT_POST" is "yes", it indicates that there were paroxysms of ventricular tachycardia at the time of admission to the intensive care unit. It is possible that the patient has chronic heart failure.

To create the dictionary, we need to analyze the values of feature "GT_POST" for each target class.

Here is the dictionary:

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

The dictionary indicates that the possible values of feature "GT_POST" for the target class "no" are ["no"], and for the target class "yes" are ["yes"].