treads old turf like a hippopotamus ballerina 
(ROOT (S (VP (VBZ treads) (NP (JJ old) (NN turf)) (PP (IN like) (NP (DT a) (NN hippopotamus) (NN ballerina))))))
(ROOT (S (VP (VBZ ) (NP (JJ ) (NN )) (PP (IN ) (NP (DT ) (NN ) (NN ))))))