Folk is a synonym of Tribe. Tribe is the opposite of Loose. Loose is the opposite of Tighten. 
you are likely to find Salt in/at/on Mine. Mine is a type of Weapon. 
Folk <--Synonym--> Tribe <--Antonym--> Loose <--Antonym--> Tighten 
Salt --AtLocation--> Mine --IsA--> Weapon 