you are likely to find Title in/at/on Library. Library is related to Room. Room is related to Unit. Couple is a type of Unit. 
Aisle is related to Wedding. Wedding is related to Commitment. Commitment is related to Ring. 
Title --AtLocation--> Library <--RelatedTo--> Room <--RelatedTo--> Unit <--IsA-- Couple 
Aisle <--RelatedTo--> Wedding <--RelatedTo--> Commitment <--RelatedTo--> Ring 