Based on prior knowledge, the feature "Recency" represents the number of months since the last blood donation. To analyze the relationship between this feature and the task, we can consider the following:

1. People who have donated blood more recently may be more likely to donate again, indicating a positive relationship between Recency and the target variable.
2. On the contrary, people who have donated blood a long time ago may be less likely to donate again, indicating a negative relationship between Recency and the target variable.

Based on this analysis, we can create a dictionary with typical Recency values for each target class:

```json
{
	"yes": [1.0, 2.0, 3.0, 4.0, 5.0],
	"no": [15.0, 16.0, 17.0, 18.0, 19.0]
}
```

The values provided above are just examples, and the actual range of Recency values and the specific values themselves may vary based on the dataset and further analysis.