Based on the feature description and the task, we want to analyze the relationship between the feature "O_L_POST" (Pulmonary edema at the time of admission to the ICU) and the presence of chronic heart failure (target variable). 

To analyze this relationship, we can examine the available data and check how the feature values of "O_L_POST" correspond to the presence or absence of chronic heart failure.

Here, we need to determine if the patient has chronic heart failure based on the myocardial infarction complications data. So, we should check if patients with "O_L_POST" values of "yes" have chronic heart failure and if patients with "O_L_POST" values of "no" do not have chronic heart failure.

Based on the analysis, the dictionary would look like:

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

Since the feature is a categorical variable with only two possible values ('no' and 'yes'), we only include those values in the dictionary for each target class.