Brush is related to Painter. Painter is related to Drawer. you are likely to find Bear in/at/on Drawer. Bear is related to Predator. 
Student is part of Class. Freshman is a type of Class. 
Brush <--RelatedTo--> Painter <--RelatedTo--> Drawer <--AtLocation-- Bear <--RelatedTo--> Predator 
Student --PartOf--> Class <--IsA-- Freshman 