the fluid motion is astounding on any number of levels -- including the physical demands made on büttner -- and 
(ROOT (S (NP (DT the) (NN fluid) (NN motion)) (VP (VBZ is) (ADJP (JJ astounding)) (PP (IN on) (NP (NP (DT any) (NN number)) (PP (IN of) (NP (NNS levels))) (, --) (PP (VBG including) (NP (NP (DT the) (JJ physical) (NNS demands)) (VP (VBN made) (PP (IN on) (NP (NNP büttner)))))) (, --)))) (CC and)))
(ROOT (S (NP (DT ) (NN ) (NN )) (VP (VBZ ) (ADJP (JJ )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNS ))) (, ) (PP (VBG ) (NP (NP (DT ) (JJ ) (NNS )) (VP (VBN ) (PP (IN ) (NP (NNP )))))) (, )))) (CC )))