the piano teacher is not an easy film . 
(ROOT (S (NP (DT the) (NN piano) (NN teacher)) (VP (VBZ is) (RB not) (NP (DT an) (JJ easy) (NN film))) (. .)))
(ROOT (S (NP (DT ) (NN ) (NN )) (VP (VBZ ) (RB ) (NP (DT ) (JJ ) (NN ))) (. )))