Based on the given feature "persons" and the task of rating the decision to buy a car, we can analyze the potential relationship between the feature and the target variable by considering how the capacity in terms of persons to carry affects the rating.

Here's the analysis of the relationship between the feature "persons" and the target variable:

- Unacceptable: It's possible that a decision to buy a car with a lower capacity, such as 2 persons, might be rated as unacceptable if the buyer needs to carry more people frequently.
- Acceptable: Cars with a capacity of 4 persons could be viewed as acceptable in most cases, as they can accommodate small families or groups of friends.
- Good: A car with a capacity of "more" persons might be considered good, as it offers flexibility and can accommodate larger groups, which can be useful for family outings or carpooling.
- Very Good: Similar to the "good" rating, a car with a capacity of "more" persons may be seen as very good, as it provides even greater flexibility and can comfortably accommodate larger groups.

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

```json
{
	"unacceptable": ["2"],
	"acceptable": ["4"],
	"good": ["more"],
	"very good": ["more"]
}
```

Please note that this analysis is based on assumptions and general knowledge about purchasing decisions related to car capacity. The list for each target class may not include every possible person value, especially for the ambiguous "more" category, but it ensures that each target class has at least one value in the list.