Based on prior knowledge, it is likely that the feature "Recency" (months since last donation) is a significant factor in determining whether a person will donate blood. 

To analyze the relationship between the feature and the task, we can examine the typical recency values for each target class ('yes' or 'no').

Here is a dictionary detailing the possible values of the feature "Recency" for each target class:

```json
{
	"yes": [2, 4, 6, 8, 12],
	"no": [1, 3, 5, 7, 10]
}
```

In this example, for the target class 'yes' (people who donated blood), the typical recency values of 2, 4, 6, 8, and 12 months are provided. For the target class 'no' (people who did not donate blood), the typical recency values of 1, 3, 5, 7, and 10 months are provided.

These values are subject to change depending on the specific dataset and context. However, based on prior knowledge, these values are commonly observed in similar scenarios.