(S (S (BASENP (DT The) (NNP Cassini) (NN mission)) (VP (VP (VBD discovered) (NP (BASENP (NNP Enceladus) (POS ')) (NP (BASENP (JJ water-vapor) (CC and) (JJ ice)) (NNS jets)))) (PP (IN in) (BASENP (NN 2005))))) (PERIOD .))