the tiniest segment of an already obscure demographic 
(ROOT (NP (NP (DT the) (JJS tiniest) (NN segment)) (PP (IN of) (NP (DT an) (ADJP (RB already) (JJ obscure)) (NN demographic)))))
(ROOT (NP (NP (DT ) (JJS ) (NN )) (PP (IN ) (NP (DT ) (ADJP (RB ) (JJ )) (NN )))))