( Water ( ( ( is ( a ( common substance ) ) ) ( that ( everyone ( has ( seen ( in ( ( its ( three states ) ) ( of matter ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Water)) (VP (VBZ is) (NP (DT a) (JJ common) (NN substance)) (SBAR (IN that) (S (NP (NN everyone)) (VP (VBZ has) (VP (VBN seen) (PP (IN in) (NP (NP (PRP$ its) (CD three) (NNS states)) (PP (IN of) (NP (NN matter)))))))))) (. .)))
Water is a common substance that everyone has seen in its three states of matter.
(ROOT (S (NP (NNP Water)) (VP (VBZ exists) (PP (IN on) (NP (NP (NN earth)) (PP (IN in) (NP (NP (CD three) (NN matter) (NNS states)) (VP (VBZ states))))))) (. .)))