Based on prior knowledge, there is a potential relationship between the functional class of angina pectoris (FK_STENOK) and the presence of chronic heart failure (target variable). It is possible that higher functional classes of angina pectoris may be associated with a higher likelihood of chronic heart failure.

To analyze the relationship between FK_STENOK and the occurrence of chronic heart failure, we need to examine the myocardial infarction complications data of the patient. Specifically, we need to determine if the patient has chronic heart failure and check the corresponding FK_STENOK value.

To create the dictionary with the requested format, we will need to check the FK_STENOK values for patients who have chronic heart failure (target class "yes") and those who do not have chronic heart failure (target class "no").

```json
{
	"no": ["there is no angina pectoris", "II FC", "I FC", "III FC."],
	"yes": ["IV FC"]
}
```

Based on the analysis, patients without chronic heart failure (target class "no") can have any of the following FK_STENOK values: "there is no angina pectoris", "II FC", "I FC", or "III FC.". On the other hand, patients with chronic heart failure (target class "yes") only have the FK_STENOK value "IV FC".