To analyze the relationship between the feature "IM_PG_P" and the presence of chronic heart failure, we will examine the distribution of IM_PG_P values for each target class (yes and no) in the myocardial infarction complications data.

Here is the analysis:

- For the target class "no":
  - IM_PG_P values that indicate "no" for chronic heart failure: ['no']

- For the target class "yes":
  - IM_PG_P values that indicate "yes" for chronic heart failure: ['yes']

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

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