Based on prior knowledge, the relationship between the feature "campaign" and the task of whether a client subscribes to a term deposit can be analyzed as follows:

The feature "campaign" represents the number of contacts performed during the campaign for a specific client. It can indicate how many times a client has been contacted in an attempt to persuade them to subscribe to a term deposit. 

To analyze the relationship between "campaign" and the target variable, we can look at typical values of "campaign" for each target class ("no" - client does not subscribe, "yes" - client subscribes). Here are five typical campaign values for each target class:

```json
{
	"no": [1.0, 2.0, 3.0, 4.0, 5.0],
	"yes": [1.0, 2.0, 3.0, 4.0, 5.0]
}
```

Please note that the ranges of values for the feature "campaign" were not explicitly defined, so we have assumed a range of 1 to 5 for this analysis. You can adjust the ranges based on the specific dataset or domain knowledge.