Tight is a synonym of Nasty. you are likely to find Nasty in/at/on Trash. you are likely to find Trash in/at/on Hospital. Hospital is related to Emergency. 
Final is the opposite of Preliminary. Preliminary is a type of Origin. 
Tight <--Synonym--> Nasty --AtLocation--> Trash --AtLocation--> Hospital <--RelatedTo--> Emergency 
Final <--Antonym--> Preliminary --IsA--> Origin 