Agent is related to Guard. Guard is related to Soldier. Soldier is related to Captain. Captain is related to Uniform. 
Human is related to Life. Life is related to Death. Death can be Tragic. 
Agent <--RelatedTo--> Guard <--RelatedTo--> Soldier <--RelatedTo--> Captain <--RelatedTo--> Uniform 
Human <--RelatedTo--> Life <--RelatedTo--> Death --HasProperty--> Tragic 