a stirring visual sequence like a surge through swirling rapids or a leap from pinnacle to pinnacle 
(ROOT (NP (NP (DT a) (VBG stirring) (JJ visual) (NN sequence)) (PP (IN like) (NP (NP (NP (DT a) (NN surge)) (PP (IN through) (NP (VBG swirling) (NNS rapids)))) (CC or) (NP (NP (DT a) (NN leap)) (PP (IN from) (NP (NN pinnacle))) (PP (IN to) (NP (NN pinnacle))))))))
(ROOT (NP (NP (DT ) (VBG ) (JJ ) (NN )) (PP (IN ) (NP (NP (NP (DT ) (NN )) (PP (IN ) (NP (VBG ) (NNS )))) (CC ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))) (PP (IN ) (NP (NN ))))))))