bowling for columbine '' remains a disquieting and thought-provoking film ... 
(ROOT (S (VP (VBG bowling) (PP (IN for) (NP (NN columbine)))) ('' '') (VP (VBZ remains) (NP (DT a) (ADJP (ADJP (JJ disquieting)) (CC and) (ADJP (NN thought) (HYPH -) (VBG provoking))) (NN film))) (. ...)))
(ROOT (S (VP (VBG ) (PP (IN ) (NP (NN )))) ('' ) (VP (VBZ ) (NP (DT ) (ADJP (ADJP (JJ )) (CC ) (ADJP (NN ) (HYPH ) (VBG ))) (NN ))) (. )))