Aggression is a type of Behavior. Behavior is related to Crime. Crime is related to Detective. Detective is related to Policeman. 
Fan is a type of Device. Fan is related to Electronic. Electronic is related to Cell. Cell is related to Plant. 
Aggression --IsA--> Behavior <--RelatedTo--> Crime <--RelatedTo--> Detective <--RelatedTo--> Policeman 
Device <--IsA-- Fan <--RelatedTo--> Electronic <--RelatedTo--> Cell <--RelatedTo--> Plant 