Based on prior knowledge, we can analyze the relationship between the feature SVT_POST and the occurrence of chronic heart failure in myocardial infarction patients.

SVT_POST refers to the presence or absence of paroxysms of supraventricular tachycardia at the time of admission to the intensive care unit. Supraventricular tachycardia (SVT) is a condition where the heart rate is abnormally fast due to abnormal electrical activity in the upper chambers of the heart.

To determine whether SVT_POST is related to chronic heart failure, we need to examine the association between SVT_POST values and the occurrence of chronic heart failure in the myocardial infarction complications data.

Here's a possible analysis:

1. If SVT_POST is 'no' and the target class is 'no' (indicating no chronic heart failure), this suggests that the absence of SVT at admission is associated with a lower chance of chronic heart failure.
2. If SVT_POST is 'no' and the target class is 'yes' (indicating chronic heart failure), this suggests that the absence of SVT at admission does not exclude the possibility of chronic heart failure.
3. If SVT_POST is 'yes' and the target class is 'no', this suggests that the presence of SVT at admission does not necessarily lead to chronic heart failure.
4. If SVT_POST is 'yes' and the target class is 'yes', this suggests that the presence of SVT at admission may be associated with a higher chance of chronic heart failure.

Based on this analysis, we can create a dictionary with the possible values of SVT_POST for each target class:

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

In this case, the possible values for SVT_POST in the "no" target class are ['no'], indicating that when SVT_POST is 'no', there is no chronic heart failure. The possible values for SVT_POST in the "yes" target class are ['no', 'yes'], indicating that both 'no' and 'yes' values of SVT_POST can occur in cases with chronic heart failure.