Audience is related to Tv. Tv is related to Discover. 
Middle is related to Others. Others is related to Nation. Nation is a type of Convention. Convention is a synonym of Normal. 
Audience <--RelatedTo--> Tv <--RelatedTo--> Discover 
Middle <--RelatedTo--> Others <--RelatedTo--> Nation --IsA--> Convention <--Synonym--> Normal 