Bicycle is a type of Vehicle. you are likely to find Bicycle in/at/on Park. 
you are likely to find Shareholder in/at/on Building. you are likely to find Doorway in/at/on Building. you are likely to find Doorway in/at/on Library. 
Vehicle <--IsA-- Bicycle --AtLocation--> Park 
Shareholder --AtLocation--> Building <--AtLocation-- Doorway --AtLocation--> Library 