Interview is related to Talk. Talk is a synonym of Conference. you are likely to find Vendor in/at/on Conference. 
Metal is the opposite of Stone. Stone is a type of Kill. Kill is related to Dead. Dead is a different concept from Working. 
Interview <--RelatedTo--> Talk <--Synonym--> Conference <--AtLocation-- Vendor 
Metal <--Antonym--> Stone --IsA--> Kill <--RelatedTo--> Dead <--DistinctFrom--> Working 