Based on prior knowledge, the relationship between the feature "K_SH_POST" and the task of determining whether the myocardial infarction complications data of a patient show chronic heart failure can be analyzed as follows:

If the patient has cardiogenic shock, it may indicate a more severe condition, which could potentially lead to chronic heart failure. Therefore, patients with a value of "yes" for the "K_SH_POST" feature are more likely to have chronic heart failure compared to patients with a value of "no".

Based on this analysis, the dictionary would be as follows:

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

Since the feature "K_SH_POST" is a categorical variable with only two possible values, "no" and "yes", we can state that patients with chronic heart failure are more likely to have a value of "yes" for the "K_SH_POST" feature.