**Analysis:**

To analyze the relationship between the feature "ritm_ecg_p_08" and the target variable "chronic heart failure", we need to examine the values of "ritm_ecg_p_08" for each target class. 

Based on the description of the feature, it seems like the "ritm_ecg_p_08" represents the ECG rhythm at the time of admission to the hospital. Specifically, it is sinus rhythm with a heart rate below 60. 

To determine if this data shows chronic heart failure, we need to understand if the feature value "ritm_ecg_p_08" is related to the presence or absence of chronic heart failure.

**Dictionary:**

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

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

Since the feature description only provides two possible categories: "no" and "yes", we can simply add these values to the dictionary corresponding to their respective target classes.