Big is related to Mansion. 
Brake is related to Wheel. you are likely to find Wheel in/at/on Boat. Rib is a type of Boat. Rib is related to Sauce. 
Big <--RelatedTo--> Mansion 
Brake <--RelatedTo--> Wheel --AtLocation--> Boat <--IsA-- Rib <--RelatedTo--> Sauce 