Based on prior knowledge, we can analyze the relationship between the "contact" feature and the task of whether the client subscribes to a term deposit.

Looking at the feature "contact communication type", it represents the mode of communication with the client. The categories are 'unknown', 'cellular', and 'telephone'. It is possible that the mode of communication can influence the subscription decision.

To analyze the relationship between the feature and the task, we can examine the distribution of each contact communication type for both the "yes" and "no" classes.

Based on this analysis, we can create the dictionary as follows:

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

This indicates that for both the "yes" and "no" classes, all three categories of contact communication type are possible values.