Based on prior knowledge, marital status can be a useful feature in predicting the annual earnings of an individual. It is reasonable to assume that individuals who are married, especially if they are married to a civilian spouse or have an armed forces spouse, are more likely to earn over $50,000 per year compared to those who are never married, widowed, divorced, separated, or have a spouse who is absent or in the armed forces.

Based on this analysis, the dictionary would look as follows:

```json
{
	"no": ["Never-married", "Widowed", "Divorced", "Separated", "Married-spouse-absent"],
	"yes": ["Married-civ-spouse", "Married-AF-spouse"]
}
```