Baseball is related to Drop. Drop is related to Let. Let is the opposite of Prevent. Exclude is a type of Prevent. 
Break is a synonym of Subject. Subject is related to Topic. Topic is related to Debate. 
Baseball <--RelatedTo--> Drop <--RelatedTo--> Let <--Antonym--> Prevent <--IsA-- Exclude 
Break <--Synonym--> Subject <--RelatedTo--> Topic <--RelatedTo--> Debate 