Based on prior knowledge, we can analyze the relationship between the feature "purpose" and the task of whether a person receives a credit.

Analyzing the categories of the "purpose" feature:
- 'radio/tv': This category represents the purpose of the credit being used for purchasing a radio or television. It is possible that people who request credit for this purpose may be more likely to receive it.
- 'education': This category represents the purpose of the credit being used for educational expenses. Depending on the educational program and the financial situation of the person, they may or may not receive credit.
- 'furniture/equipment': This category represents the purpose of the credit being used for purchasing furniture or equipment. The decision on whether a person receives credit for this purpose would depend on various factors such as their financial stability and credit history.
- 'new car': This category represents the purpose of the credit being used for purchasing a new car. The decision on whether a person receives credit for this purpose would depend on their income, credit score, and other factors.
- 'used car': This category represents the purpose of the credit being used for purchasing a used car. Similar to the purpose of purchasing a new car, the decision on whether a person receives credit for this purpose would depend on their financial situation and creditworthiness.
- 'business': This category represents the purpose of the credit being used for business purposes. The decision on whether a person receives credit for this purpose would depend on the viability of their business plan, their credit history, and other factors.
- 'domestic appliance': This category represents the purpose of the credit being used for purchasing domestic appliances. Similar to other categories, the decision on whether a person receives credit for this purpose would depend on their financial stability and creditworthiness.
- 'repairs': This category represents the purpose of the credit being used for repairs. Whether a person receives credit for this purpose would depend on the nature and cost of repairs, their financial situation, and other factors.
- 'other': This category represents the purpose of the credit being used for purposes not covered by other categories. It is difficult to predict the outcome for this purpose without more specific information.
- 'retraining': This category represents the purpose of the credit being used for retraining. The decision on whether a person receives credit for this purpose would depend on the type of retraining, their financial stability, and other factors.

Based on this analysis, we can create the following dictionary:

```json
{
	"yes": ["radio/tv", "education", "furniture/equipment", "new car", "used car", "business", "domestic appliance", "repairs", "retraining"],
	"no": ["other"]
}
```

Note that the purpose values "other" is included in the "no" list, as it represents a purpose that is hard to predict.