```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```
Based on the given feature description ("fibr_ter_05" representing Fibrinolytic therapy by Streptase), there are two possible values for this feature: "no" and "yes". For the task of determining whether the patient shows chronic heart failure, the analysis of the relationship between the feature and target suggests that the presence or absence of Fibrinolytic therapy does not provide clear information about chronic heart failure. Both "no" and "yes" values for fibr_ter_05 can be present regardless of whether the patient has chronic heart failure or not. Therefore, the dictionary includes both possible values for the feature.