Item is related to Bone. Bone is related to Bad. Bad is related to Shock. Shock is related to Unhappy. 
Important is related to Operation. Offense is a type of Operation. 
Item <--RelatedTo--> Bone <--RelatedTo--> Bad <--RelatedTo--> Shock <--RelatedTo--> Unhappy 
Important <--RelatedTo--> Operation <--IsA-- Offense 