Involved is related to Walk. one thing you do when you Walk is Trip. Trip is a synonym of Spark. Spark is a type of Fragment. 
you are likely to find Confusion in/at/on Conference. you are likely to find Confusion in/at/on War. War is a type of Violence. 
Involved <--RelatedTo--> Walk --HasSubevent--> Trip <--Synonym--> Spark --IsA--> Fragment 
Conference <--AtLocation-- Confusion --AtLocation--> War --IsA--> Violence 