Wolf is the opposite of Sheep. Sheep is the opposite of Goat. you are likely to find Goat in/at/on Barn. you are likely to find Mill in/at/on Barn. 
Throw is a type of Put. Replace is a type of Put. Replace is related to Protest. Protest is related to Politics. 
Wolf <--Antonym--> Sheep <--Antonym--> Goat --AtLocation--> Barn <--AtLocation-- Mill 
Throw --IsA--> Put <--IsA-- Replace <--RelatedTo--> Protest <--RelatedTo--> Politics 