Advice is a synonym of Recommendation. Character is a type of Recommendation. Character is related to Book. Book is a synonym of Engage. 
Known is a synonym of Appear. Appear is the opposite of Disappear. 
Advice <--Synonym--> Recommendation <--IsA-- Character <--RelatedTo--> Book <--Synonym--> Engage 
Known <--Synonym--> Appear <--Antonym--> Disappear 