Based on prior knowledge, the relationship between blood pressure and the presence of diabetes can vary. However, there are some general trends that can be analyzed. 

First, let's define the appropriate ranges of values for diastolic blood pressure (DBP). Normal blood pressure typically falls within the range of 60-80 mm Hg. High blood pressure, also known as hypertension, is commonly classified as having a DBP of 90 mm Hg or higher. In contrast, low blood pressure, or hypotension, is often defined as having a DBP below 60 mm Hg.

To generate the dictionary, we will analyze the possible values of DBP for both the "yes" and "no" classes.

```json
{
	"yes": [80.0, 85.0, 90.0, 95.0, 100.0],  
	"no": [70.0, 75.0, 80.0, 85.0, 90.0]
}
```

In this example, we have included five typical blood pressure values for each target class ("yes" and "no"). Please note that these values are for illustrative purposes only and may not accurately represent the relationship between blood pressure and diabetes. The specific ranges of blood pressure values associated with diabetes may vary depending on various factors and should be determined through proper statistical analysis.