his latest feature , r xmas , marks a modest if encouraging return to form 
(ROOT (S (NP (NP (PRP$ his) (JJS latest) (NN feature)) (, ,) (NP (VBZ r) (NN xmas)) (, ,)) (VP (VBZ marks) (NP (NP (DT a) (ADJP (JJ modest) (IN if) (VBG encouraging)) (NN return)) (PP (IN to) (NP (NN form)))))))
(ROOT (S (NP (NP (PRP$ ) (JJS ) (NN )) (, ) (NP (VBZ ) (NN )) (, )) (VP (VBZ ) (NP (NP (DT ) (ADJP (JJ ) (IN ) (VBG )) (NN )) (PP (IN ) (NP (NN )))))))