Discourse is related to Speech. Speech is related to Public. Public is related to Tax. Tax is related to Flat. 
Telescope is related to See. See is a type of Bet. Bet is a synonym of Stake. 
Discourse <--RelatedTo--> Speech <--RelatedTo--> Public <--RelatedTo--> Tax <--RelatedTo--> Flat 
Telescope <--RelatedTo--> See --IsA--> Bet <--Synonym--> Stake 