a witty , low-key romantic comedy . 
(ROOT (NP (DT a) (JJ witty) (, ,) (ADJP (JJ low) (HYPH -) (JJ key)) (JJ romantic) (NN comedy) (. .)))
(ROOT (NP (DT ) (JJ ) (, ) (ADJP (JJ ) (HYPH ) (JJ )) (JJ ) (NN ) (. )))