's well worth spending some time with 
(ROOT (VP (VBZ 's) (ADJP (RB well) (JJ worth) (S (VP (VBG spending) (NP (DT some) (NN time)) (PP (IN with)))))))
(ROOT (VP (VBZ ) (ADJP (RB ) (JJ ) (S (VP (VBG ) (NP (DT ) (NN )) (PP (IN )))))))