( Snow ( ( is ( ( a form ) ( of ( ( ice and ) water ) ) ) ) . ) )
(ROOT (S (NP (NNP Snow)) (VP (VBZ is) (NP (NP (DT a) (NN form)) (PP (IN of) (NP (NN ice) (CC and) (NN water))))) (. .)))
Snow is a form of ice and water.
(ROOT (S (NP (NNP Water)) (VP (VBZ takes) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN ice)))) (PP (IN on) (NP (NN planet) (NNS mars)))) (. .)))