Catalog is related to Library. Library is related to College. 
Square is a type of Conservative. Square is related to Corner. you are likely to find Shelf in/at/on Corner. you are likely to find Clock in/at/on Shelf. 
Catalog <--RelatedTo--> Library <--RelatedTo--> College 
Conservative <--IsA-- Square <--RelatedTo--> Corner <--AtLocation-- Shelf <--AtLocation-- Clock 