really an advantage to invest such subtlety and warmth in an animatronic bear when the humans are acting like puppets 
(ROOT (FRAG (ADVP (RB really)) (NP (DT an) (NN advantage)) (S (VP (TO to) (VP (VB invest) (NP (JJ such) (NN subtlety) (CC and) (NN warmth)) (PP (IN in) (NP (DT an) (JJ animatronic) (NN bear))) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NNS humans)) (VP (VBP are) (VP (VBG acting) (PP (IN like) (NP (NNS puppets))))))))))))
(ROOT (FRAG (ADVP (RB )) (NP (DT ) (NN )) (S (VP (TO ) (VP (VB ) (NP (JJ ) (NN ) (CC ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))) (SBAR (WHADVP (WRB )) (S (NP (DT ) (NNS )) (VP (VBP ) (VP (VBG ) (PP (IN ) (NP (NNS ))))))))))))