Capital is related to Wash. Wash is a type of Remove. Pit is a type of Remove. Pit is related to Grave. 
Stability is derived from Ability. Ability is related to Able. Enable is derived from Able. 
Capital <--RelatedTo--> Wash --IsA--> Remove <--IsA-- Pit <--RelatedTo--> Grave 
Stability --DerivedFrom--> Ability <--RelatedTo--> Able <--DerivedFrom-- Enable 