Opening is related to Dear. Dear is related to Expensive. Expensive is the opposite of Sheep. Sheep is related to Medium. 
Salt is related to Wave. Wave is related to Hang. 
Opening <--RelatedTo--> Dear <--RelatedTo--> Expensive <--Antonym--> Sheep <--RelatedTo--> Medium 
Salt <--RelatedTo--> Wave <--RelatedTo--> Hang 