Based on prior knowledge, we can analyze how the feature "foreign_worker" relates to the task of determining whether a person receives credit or not.

Since the feature "foreign_worker" is a categorical variable with two possible values - "yes" or "no", we can analyze how these values are related to the target variable "credit". 

Analyzing the relationship, we can create the following dictionary:

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

This indicates that if the value of the feature "foreign_worker" is "yes", then the person receives credit, and if the value is "no", the person does not receive credit.