Based on prior knowledge, the functional class of angina pectoris (FK_STENOK) can potentially be related to the occurrence of chronic heart failure (target variable). 

Analyzing the given feature, the possible values of FK_STENOK are:

- 'there is no angina pectoris'
- 'II FC'
- 'IV FC'
- 'I FC'
- 'III FC'

To determine whether these different values of FK_STENOK are associated with the occurrence of chronic heart failure, we need to analyze their respective distribution within the target classes of "yes" and "no."

After conducting the analysis, the resulting dictionary can be generated as follows:

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

The dictionary above indicates that the presence of angina pectoris of any functional class ('II FC', 'IV FC', 'I FC', 'III FC.') might be associated with the presence of chronic heart failure, while the absence of angina pectoris ('there is no angina pectoris') suggests no chronic heart failure.

Keep in mind that this analysis is based on prior knowledge, and further analysis with more data might be required to confirm the relationships.