Based on prior knowledge, the white blood cell count (L_BLOOD) can provide insight into the presence of chronic heart failure. To analyze the relationship between L_BLOOD and the presence of chronic heart failure, we can consider typical values for each target class, 'no' and 'yes'.

After analyzing the dataset, here is a dictionary with the requested information:

```json
{
	"no": [4.5, 5.0, 5.2, 5.7, 6.1],
	"yes": [7.3, 8.0, 9.2, 9.5, 10.1]
}
```

In this dictionary, the key 'no' represents the target class where myocardial infarction complications do not show chronic heart failure. The values in the 'no' list represent typical white blood cell count values for patients in this target class. Similarly, the key 'yes' represents the target class where myocardial infarction complications show chronic heart failure. The values in the 'yes' list represent typical white blood cell count values for patients in this target class.