fresh , unforced naturalism to their characters 
(ROOT (NP (NP (JJ fresh) (, ,) (VBN unforced) (NN naturalism)) (PP (IN to) (NP (PRP$ their) (NNS characters)))))
(ROOT (NP (NP (JJ ) (, ) (VBN ) (NN )) (PP (IN ) (NP (PRP$ ) (NNS )))))