After analyzing the relationship between the "other_parties" feature and the "Does this person receive a credit?" task, we can create a dictionary with the following format:

```json
{
	"yes": ["guarantor", "co applicant"],
	"no": ["none"]
}
```

Explanation:
- When the target class is "yes" (person receives credit), possible values for the "other_parties" feature are "guarantor" and "co applicant".
- When the target class is "no" (person does not receive credit), the only possible value for the "other_parties" feature is "none".