Realistic is related to Possible. Possible is related to Practical. Practical is related to Conventional. 
Pick is made of Metal. Metal is the opposite of Country. you are likely to find Grass in/at/on Country. Grass is a type of Unfold. 
Realistic <--RelatedTo--> Possible <--RelatedTo--> Practical <--RelatedTo--> Conventional 
Pick --MadeOf--> Metal <--Antonym--> Country <--AtLocation-- Grass --IsA--> Unfold 