Pad is related to Tuck. Tuck is related to Action. Action is related to Practice. 
University is a type of Organization. you are likely to find Writer in/at/on University. Contributor is a type of Writer. 
Pad <--RelatedTo--> Tuck <--RelatedTo--> Action <--RelatedTo--> Practice 
Organization <--IsA-- University <--AtLocation-- Writer <--IsA-- Contributor 