Aunt is related to Cousin. Cousin can be Female. Female is related to Cow. 
Blow is related to Sexy. Sexy is derived from Sex. Sex is related to Boy. Boyfriend is derived from Boy. 
Aunt <--RelatedTo--> Cousin --HasProperty--> Female <--RelatedTo--> Cow 
Blow <--RelatedTo--> Sexy --DerivedFrom--> Sex <--RelatedTo--> Boy <--DerivedFrom-- Boyfriend 