Base is related to Port. you are likely to find Container in/at/on Port. you are likely to find Milk in/at/on Container. 
Nonprofit is the opposite of Business. Business is related to Meeting. Reception is a type of Meeting. you are likely to find Reception in/at/on Restaurant. 
Base <--RelatedTo--> Port <--AtLocation-- Container <--AtLocation-- Milk 
Nonprofit <--Antonym--> Business <--RelatedTo--> Meeting <--IsA-- Reception --AtLocation--> Restaurant 