Firm is the opposite of Soft. Soft is related to Breeze. Breeze is the opposite of Test. Test is related to Set. 
Shark is related to Great. Great is related to View. View is related to Room. Room is related to Toy. 
Firm <--Antonym--> Soft <--RelatedTo--> Breeze <--Antonym--> Test <--RelatedTo--> Set 
Shark <--RelatedTo--> Great <--RelatedTo--> View <--RelatedTo--> Room <--RelatedTo--> Toy 