Mayor is related to Head. Head is related to Basketball. you are likely to find Boundary in/at/on Basketball. Boundary is a synonym of Edge. 
Cabin is related to Camp. Camp is the opposite of School. 
Mayor <--RelatedTo--> Head <--RelatedTo--> Basketball <--AtLocation-- Boundary <--Synonym--> Edge 
Cabin <--RelatedTo--> Camp <--Antonym--> School 