Rest is related to Stay. Stay is related to Dog. Dog is related to Courage. 
Poet is related to Human. Christian is a type of Human. Christian is a synonym of Sweet. Sweet is related to Home. 
Rest <--RelatedTo--> Stay <--RelatedTo--> Dog <--RelatedTo--> Courage 
Poet <--RelatedTo--> Human <--IsA-- Christian <--Synonym--> Sweet <--RelatedTo--> Home 