Principal is a type of Capital. Capital is related to Map. you are likely to find Border in/at/on Map. Border is a synonym of Margin. 
Powerful is related to Might. Might is the opposite of Weakness. Weakness is the opposite of Energy. Energy is related to Rest. 
Principal --IsA--> Capital <--RelatedTo--> Map <--AtLocation-- Border <--Synonym--> Margin 
Powerful <--RelatedTo--> Might <--Antonym--> Weakness <--Antonym--> Energy <--RelatedTo--> Rest 