Tag is a synonym of Dog. Dog is related to Friendly. Friendly is related to Dear. Dear is the opposite of Cheap. 
Green is related to Army. Army is related to Ground. you are likely to find Pilot in/at/on Ground. Mark is a type of Pilot. 
Tag <--Synonym--> Dog <--RelatedTo--> Friendly <--RelatedTo--> Dear <--Antonym--> Cheap 
Green <--RelatedTo--> Army <--RelatedTo--> Ground <--AtLocation-- Pilot <--IsA-- Mark 