( ( ( Water , ) ( ( ( Ice , ) and ) ( Permafrost ( on ( ( Mars and ) Europa ) ) ) ) ) ; )
(ROOT (NP (NP (NNP Water)) (, ,) (NP (NP (NN Ice)) (, ,) (CC and) (NP (NP (NNP Permafrost)) (PP (IN on) (NP (NNP Mars) (CC and) (NNP Europa))))) (: ;)))
Water, Ice, and Permafrost on Mars and Europa;
(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)))) (. .)))