Based on prior knowledge, we can analyze the relationship between the feature "capital-gain" and the task of whether the person earns more than $50,000 per year.

In general, capital gain refers to the profit obtained from the sale of a capital asset. A higher capital gain would indicate higher earnings, which could potentially increase the likelihood of the person earning more than $50,000 per year.

However, it is important to note that capital gain alone is not the sole determinant of whether a person earns more than $50,000 per year. Other factors such as income from salary, investments, and deductions also play a significant role.

Based on this analysis, we can create a dictionary with the possible values of the feature "capital-gain" for each target class:

```json
{
	"no": [0, 500, 1000, 2000, 3000],
	"yes": [5000, 10000, 15000, 20000, 25000]
}
```

Please note that these values are just examples and represent typical capital-gain values for each target class. The actual values may vary depending on the dataset being analyzed.