What types state have one royal houses ji and have one ruler?
State Type Name Title Royal house From
List of state leaders in 990s BC
17310478
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Vassal states
Vassal states
Cao Sovereign Zhong Lord — 1002 BC
Lu Sovereign Bo Qin Ruler Ji 1043 BC
Lu Sovereign Kao Duke Ji 997 BC
Lu Sovereign Yang Duke Ji 993 BC
Qi Sovereign Ding Duke — 999 BC
SELECT Type FROM table WHERE Royal house = ji AND Title = ruler
ji ruler