Based on the given feature description and task, we need to analyze the relationship between the feature FK_STENOK (Functional class of angina pectoris) and the presence of chronic heart failure.

It is reasonable to assume that the functional class of angina pectoris may be related to the presence of chronic heart failure. Generally, higher functional class values indicate more severe symptoms of angina pectoris, which could be associated with a higher likelihood of chronic heart failure.

To analyze the relationship, we will consider the possible categories of the feature FK_STENOK and examine how they correspond to the presence or absence of chronic heart failure in the target class.

Here is the dictionary with the analysis results:

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

Explanation:
- For patients without chronic heart failure (`"no"`), the possible values of FK_STENOK are "there is no angina pectoris" and "I FC". This suggests that patients without chronic heart failure may experience no angina pectoris or have angina pectoris with a lower functional class.
- For patients with chronic heart failure (`"yes"`), the possible values of FK_STENOK are "II FC", "IV FC", and "III FC.". This implies that patients with chronic heart failure may experience more severe symptoms of angina pectoris, indicated by higher functional class values.

Note: The category "III FC." appears to have a typo with an extra period at the end. Assuming it is intended as "III FC", we have included it in the dictionary.