Based on prior knowledge, there may be a relationship between gender (SEX) and chronic heart failure (myocardial infarction complications). However, it is important to note that the presence or absence of chronic heart failure cannot be determined solely based on gender. There can be cases where both males and females can develop chronic heart failure, and vice versa.

To analyze the relationship between SEX and chronic heart failure, we can examine the distribution of SEX within each target class (yes or no). Let's proceed with the analysis and generate the dictionary:

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

Please note that the values can vary depending on the dataset and specific task. This analysis is based on the assumption that both males and females can have chronic heart failure.