Join is related to Invite. Challenge is a type of Invite. Challenge is a synonym of Dispute. Controversy is a type of Dispute. 
Chase is related to Stick. Stick is related to Figure. Figure is a synonym of Name. 
Join <--RelatedTo--> Invite <--IsA-- Challenge <--Synonym--> Dispute <--IsA-- Controversy 
Chase <--RelatedTo--> Stick <--RelatedTo--> Figure <--Synonym--> Name 