Based on prior knowledge, the marital status of an individual can be a good indicator of their income level. Generally, married individuals tend to have higher incomes compared to those who are never-married, widowed, divorced, separated, or with other marital statuses.

To analyze the relationship between marital status and the target variable (earning more than $50,000 per year), we can look at the income distribution for each category of marital status.

Here is the dictionary with the analysis:

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

Based on the analysis, the individuals who are never-married, widowed, divorced, separated, or with their spouse absent tend to earn less than $50,000 per year. On the other hand, individuals who are married civilians or married to someone in the Armed Forces tend to earn more than $50,000 per year.

Please note that it is not necessary to include marital status values that are hard to predict in the dictionary, as long as each target class list is not empty.