Margin is related to Page. Page is related to Assistant. Assistant is a type of Worker. Rhetoric is a type of Worker. 
Effort is a type of Labor. Effort is related to Afford. 
Margin <--RelatedTo--> Page <--RelatedTo--> Assistant --IsA--> Worker <--IsA-- Rhetoric 
Labor <--IsA-- Effort <--RelatedTo--> Afford 