the problematic characters and overly convenient plot twists 
(ROOT (NP (NP (DT the) (JJ problematic) (NNS characters)) (CC and) (NP (ADJP (RB overly) (JJ convenient)) (NN plot) (NNS twists))))
(ROOT (NP (NP (DT ) (JJ ) (NNS )) (CC ) (NP (ADJP (RB ) (JJ )) (NN ) (NNS ))))