```json
{
  "no": [
    "no"
  ],
  "yes": [
    "yes"
  ]
}
```
 
Based on the given feature "fibr_ter_05" which represents whether the patient received Fibrinolytic therapy by Streptase, there are two possible categories of "no" and "yes". In this specific case, the feature is directly related to the target class "chronic heart failure". If the patient received Fibrinolytic therapy by Streptase (fibr_ter_05 = "yes"), it indicates that the myocardial infarction complications data of this patient does show chronic heart failure. On the other hand, if the patient did not receive Fibrinolytic therapy by Streptase (fibr_ter_05 = "no"), it suggests that the patient does not show chronic heart failure.