```json
{
	"no": ["no", "yes"],  
	"yes": ["no", "yes"]  
}
```
Based on the provided information, it is not possible to determine the relationship between the feature "fibr_ter_01" and the target variable "chronic heart failure." The possible values of the feature "fibr_ter_01" for both target classes (yes and no) are "no" and "yes." However, there is no information given about how these values are related to the presence or absence of chronic heart failure. Therefore, the relationship between the feature and target cannot be determined from the provided information.