Based on the feature description and task, we are analyzing the relationship between the feature "STENOK_AN" (exertional angina pectoris in the anamnesis) and the target variable "chronic heart failure". 

To analyze this relationship, we need data on myocardial infarction complications and whether or not chronic heart failure is present. Unfortunately, we don't have access to that data here. However, we can make some assumptions based on prior knowledge.

Exertional angina pectoris is typically associated with a higher risk of heart-related complications, including chronic heart failure. Therefore, it is likely that patients with a history of exertional angina pectoris in the anamnesis (STENOK_AN) might be more prone to develop chronic heart failure. 

Based on this analysis, we can create a dictionary with the possible values of the feature "STENOK_AN" for each target class "yes" and "no":

```json
{
	"no": ["never", "more than 5 years ago"], 
	"yes": ["during the last year", "4-5 years ago", "one year ago", "two years ago", "three years ago"]
}
```

Please note that the values included in the dictionary are just assumptions based on prior knowledge and the information provided. Without actual data, we cannot make accurate predictions about the relationship between the feature and the target variable.