you are likely to find Bathroom in/at/on Theater. Theater is a synonym of Field. Field is related to Pitch. Pitch is related to Sound. 
Artist is related to Guy. Guy is related to Reference. you are likely to find Reference in/at/on Library. you are likely to find Paper in/at/on Library. 
Bathroom --AtLocation--> Theater <--Synonym--> Field <--RelatedTo--> Pitch <--RelatedTo--> Sound 
Artist <--RelatedTo--> Guy <--RelatedTo--> Reference --AtLocation--> Library <--AtLocation-- Paper 