Book would make you want to Sleep. Republic is a type of Book. Republic is related to Battle. Battle is related to Confrontation. 
Fiction is related to Science. Science is related to Weird. Weird is etymologically related to Worth. 
Sleep <--CausesDesire-- Book <--IsA-- Republic <--RelatedTo--> Battle <--RelatedTo--> Confrontation 
Fiction <--RelatedTo--> Science <--RelatedTo--> Weird --EtymologicallyRelatedTo--> Worth 