Waist is related to Area. Area is related to Floor. you are likely to find Floor in/at/on Library. 
Poem can be used for Romance. Poem can be used for Reading. Reading is related to Turn. Lead is a type of Turn. 
Waist <--RelatedTo--> Area <--RelatedTo--> Floor --AtLocation--> Library 
Romance <--UsedFor-- Poem --UsedFor--> Reading <--RelatedTo--> Turn <--IsA-- Lead 