Manager is related to Chief. Chief is etymologically related to Captain. 
Evil is related to Offensive. Offensive is related to Attack. Gas is a type of Attack. Oxygen is a type of Gas. 
Manager <--RelatedTo--> Chief --EtymologicallyRelatedTo--> Captain 
Evil <--RelatedTo--> Offensive <--RelatedTo--> Attack <--IsA-- Gas <--IsA-- Oxygen 