Based on prior knowledge, there may be a relationship between obesity in the anamnesis (feature: endocr_02) and the presence of chronic heart failure in myocardial infarction complications. Obesity is known to be a risk factor for developing chronic heart failure.

To analyze this relationship, we need to examine the distribution of endocr_02 values for each target class (yes and no) in the myocardial infarction complications data.

Here is the dictionary with the distribution of endocr_02 values for each target class:

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

Explanation: 
- For the target class 'no' (indicating no chronic heart failure), the only possible value of endocr_02 is 'no'.
- For the target class 'yes' (indicating the presence of chronic heart failure), both 'no' and 'yes' values of endocr_02 are possible.

Note: Only the values that are associated with each target class in the dataset are considered in the dictionary. Other possible values of endocr_02 not present in the dataset are not included.