Event is related to Track. Track is related to Race. Race is related to Competition. 
Prevail is a type of Continue. Prevail is a type of Exist. Exist is related to Presence. 
Event <--RelatedTo--> Track <--RelatedTo--> Race <--RelatedTo--> Competition 
Continue <--IsA-- Prevail --IsA--> Exist <--RelatedTo--> Presence 