Sudden is similar to Sharp. 
you are likely to find Word in/at/on Book. you are likely to find Book in/at/on Purse. Purse is related to Lady. Lady is the opposite of Fellow. 
Sudden <--SimilarTo--> Sharp 
Word --AtLocation--> Book --AtLocation--> Purse <--RelatedTo--> Lady <--Antonym--> Fellow 