( Oxygen ( ( is ( ( distributed ( to tissue ) ) ( through ( a ( water ( vascular system ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Oxygen)) (VP (VBZ is) (VP (VBN distributed) (PP (TO to) (NP (NN tissue))) (PP (IN through) (NP (DT a) (NN water) (NN vascular) (NN system))))) (. .)))
Oxygen is distributed to tissue through a water vascular system .
(ROOT (S (NP (DT The) (NN ground) (NN tissue) (NN system)) (VP (VBZ has) (NP (ADJP (CC neither) (JJ dermal) (CC nor) (JJ vascular)) (NNS tissues))) (. .)))