Ok is a synonym of Adequate. Adequate is a synonym of Equal. Tie is a type of Equal. 
Calculation is a synonym of Sum. Gross is a type of Sum. Gross is the opposite of Fine. Fine is related to Surface. 
Ok <--Synonym--> Adequate <--Synonym--> Equal <--IsA-- Tie 
Calculation <--Synonym--> Sum <--IsA-- Gross <--Antonym--> Fine <--RelatedTo--> Surface 