Nasty is related to War. War is related to Conflict. Competition is a type of Conflict. 
Violence can cause/lead to Death. Death is a type of Illness. Illness is related to Pill. Pill is related to Vitamin. 
Nasty <--RelatedTo--> War <--RelatedTo--> Conflict <--IsA-- Competition 
Violence --Causes--> Death --IsA--> Illness <--RelatedTo--> Pill <--RelatedTo--> Vitamin 