Politician is a type of Leader. Politician is related to Job. Job is related to Walk. Walk is a type of Compel. 
Platform is related to Step. Step is related to Door. Door is related to Main. Main is related to Parade. 
Leader <--IsA-- Politician <--RelatedTo--> Job <--RelatedTo--> Walk --IsA--> Compel 
Platform <--RelatedTo--> Step <--RelatedTo--> Door <--RelatedTo--> Main <--RelatedTo--> Parade 