one of the most repellent things 
(ROOT (NP (NP (CD one)) (PP (IN of) (NP (DT the) (ADJP (RBS most) (JJ repellent)) (NNS things)))))
(ROOT (NP (NP (CD )) (PP (IN ) (NP (DT ) (ADJP (RBS ) (JJ )) (NNS )))))