```json
{
	"no": ["no"],  
	"yes": ["yes"]
}
```
In this analysis, the feature "n_r_ecg_p_06" which represents the presence or absence of persistent form of atrial fibrillation on ECG at the time of admission to hospital seems to have a direct relationship with the target variable of whether the patient has chronic heart failure or not.

For the target class "no" (indicating absence of chronic heart failure), the only possible value for the feature "n_r_ecg_p_06" is "no".
For the target class "yes" (indicating presence of chronic heart failure), the only possible value for the feature "n_r_ecg_p_06" is "yes".

Therefore, the dictionary representing this relationship is structured as shown above.