People can be Ethical. Ethical is a synonym of Moral. Moral is a synonym of Virtual. 
Custom is related to Ceremony. Ceremony is related to Master. Master is related to Captain. 
People --HasProperty--> Ethical <--Synonym--> Moral <--Synonym--> Virtual 
Custom <--RelatedTo--> Ceremony <--RelatedTo--> Master <--RelatedTo--> Captain 