Signal is related to Turn. Turn is a synonym of Flip. Flip is related to Cell. 
Authority is a type of Book. Reader is a type of Book. Reader is a type of Scholar. Scholar is related to Person. 
Signal <--RelatedTo--> Turn <--Synonym--> Flip <--RelatedTo--> Cell 
Authority --IsA--> Book <--IsA-- Reader --IsA--> Scholar <--RelatedTo--> Person 