Based on prior knowledge, the feature n_r_ecg_p_03 represents the presence or absence of ventricular contractions on an electrocardiogram (ECG) at the time of admission to the hospital. The task is to determine whether the patient's myocardial infarction complications data show chronic heart failure.

To analyze the relationship between the feature and the task, we can consider the following:
- If the feature value is "no" (i.e., no ventricular contractions on ECG), it may suggest a lower likelihood of chronic heart failure.
- If the feature value is "yes" (i.e., presence of ventricular contractions on ECG), it may indicate a higher likelihood of chronic heart failure.

Based on this analysis, we can create the dictionary as follows:

```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```

Since the feature n_r_ecg_p_03 is a categorical variable with only two possible categories ("no" and "yes"), we can include these categories in the dictionary.