may not touch the planet 's skin , but understands the workings of its spirit . 
(ROOT (S (VP (MD may) (RB not) (VP (VB touch) (NP (NP (DT the) (NN planet) (POS 's)) (NN skin)))) (, ,) (CC but) (VP (VBZ understands) (NP (NP (DT the) (NNS workings)) (PP (IN of) (NP (PRP$ its) (NN spirit))))) (. .)))
(ROOT (S (VP (MD ) (RB ) (VP (VB ) (NP (NP (DT ) (NN ) (POS )) (NN )))) (, ) (CC ) (VP (VBZ ) (NP (NP (DT ) (NNS )) (PP (IN ) (NP (PRP$ ) (NN ))))) (. )))