Based on prior knowledge, the use of lidocaine in the ICU (LID_S_n) can be related to the development of chronic heart failure (task) as follows:

1. Yes: It is possible that patients who receive lidocaine in the ICU may develop chronic heart failure.
2. No: It is possible that patients who do not receive lidocaine in the ICU may also develop chronic heart failure.

Based on this analysis, we can create a dictionary with the possible values of the LID_S_n feature for each target class:

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

Please note that since the relationship between LID_S_n and chronic heart failure is not explicitly known, we include all possible values of LID_S_n for both target classes.