Based on my prior knowledge, the presence of a right ventricular myocardial infarction (IM_PG_P) can be related to the development of chronic heart failure in patients. Here is the analysis of the relationship between the feature and task:

- If IM_PG_P is "no", it suggests that there was no right ventricular myocardial infarction. In this case, the likelihood of chronic heart failure is less compared to when IM_PG_P is "yes".
- If IM_PG_P is "yes", it indicates the presence of a right ventricular myocardial infarction. This can potentially result in the development of chronic heart failure.

Based on this analysis, the dictionary with the relationship between IM_PG_P and chronic heart failure can be generated as follows:

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

Please note that the values in this specific case are straightforward, so there is no need to include any other categories.