After analyzing the feature "inf_im" in relation to the task of determining the presence of chronic heart failure, we can create the following dictionary:

```json
{
	"no": ["there is no infarct in this location", "QRS has no changes"],  
	"yes": ["QRS is like Qr-complex", "QRS is like QR-complex", "QRS is like QS-complex"]
}
```

In this analysis, we have determined that the values "there is no infarct in this location" and "QRS has no changes" correspond to the target class "no" (indicating the absence of chronic heart failure). Similarly, the values "QRS is like Qr-complex", "QRS is like QR-complex", and "QRS is like QS-complex" correspond to the target class "yes" (indicating the presence of chronic heart failure).