( ( ICE ( ( The ( solid form ) ) ( of water ) ) ) . )
(ROOT (NP (NP (NNP ICE)) (NP (NP (DT The) (JJ solid) (NN form)) (PP (IN of) (NP (NN water)))) (. .)))
ICE The solid form of 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)))) (. .)))