Based on my prior knowledge, the feature "default" refers to whether the client has credit in default or not. To analyze the relationship between this feature and the target variable, which is whether the client subscribes to a term deposit (yes or no), we can look at the distribution of "default" values for each target class.

Here is the dictionary with specific details:

```json
{
    "no": ["no"],
    "yes": ["yes"]
}
```

As per the given feature "default", when the target class is "no" (client does not subscribe to a term deposit), the possible value of "default" feature is only "no". Similarly, when the target class is "yes" (client subscribes to a term deposit), the feature "default" can have a value of "yes". It appears that the feature "default" has a direct mapping with the target variable, therefore providing no additional predictive information. Consequently, we do not include any values other than the ones mentioned in the dictionary.