Location is a type of Workplace. Location is related to Cross. Cross is a type of Cover. Cover is related to Case. 
Department is related to Employment. Employment is a type of Crime. Crime is related to Influence. Exposure is a type of Influence. 
Workplace <--IsA-- Location <--RelatedTo--> Cross --IsA--> Cover <--RelatedTo--> Case 
Department <--RelatedTo--> Employment --IsA--> Crime <--RelatedTo--> Influence <--IsA-- Exposure 