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

Based on the feature description and the task, it seems that the LID_S_n feature represents the use of lidocaine in the ICU. The question is whether this feature is related to the presence of chronic heart failure. To analyze this relationship, we can look at the possible values of LID_S_n for patients with and without chronic heart failure.

Since there is no specific information given about the relationship between LID_S_n and chronic heart failure, we can assume that the use of lidocaine in the ICU does not have a direct impact on the presence of chronic heart failure. Therefore, the values of LID_S_n for both target classes (yes and no) can be any value, including "yes" and "no".

Hence, the dictionary will contain the values "yes" and "no" for both target classes.