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

- "Unknown" contact type: It is hard to predict whether clients with "unknown" contact type will subscribe to a term deposit or not. We will include this category in both target classes.

- "Cellular" contact type: There is a possibility that clients with a "cellular" contact type may subscribe to a term deposit. We will include this category in the "yes" target class.

- "Telephone" contact type: It is less likely that clients with a "telephone" contact type will subscribe to a term deposit. We will include this category in the "no" target class.

Based on this analysis, the dictionary can be created as follows:

```json
{
	"no": ["telephone"],
	"yes": ["unknown", "cellular"]
}
```