one of the biggest disappointments of the year 
(ROOT (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (JJS biggest) (NNS disappointments)) (PP (IN of) (NP (DT the) (NN year)))))))
(ROOT (NP (NP (CD )) (PP (IN ) (NP (NP (DT ) (JJS ) (NNS )) (PP (IN ) (NP (DT ) (NN )))))))