Speaker is related to Stage. Stage is related to Actor. Actor is a synonym of Plaintiff. Plaintiff is the opposite of Defendant. 
Marketplace is a synonym of Market. you are likely to find Market in/at/on Village. 
Speaker <--RelatedTo--> Stage <--RelatedTo--> Actor <--Synonym--> Plaintiff <--Antonym--> Defendant 
Marketplace <--Synonym--> Market --AtLocation--> Village 