(S (S (S (PP (IN In) (BASENP (NN 2009))) (COMMA ,) (S (NP (BASENP (NNS scientists)) (VP (VBG working) (PP (IN with) (BASENP (DT the) (JJ cosmic) (NN dust) (NN analyzer))))) (VP (VBD examined) (NP (BASENP (DT some) (NN sodium) (NNS salts)) (VP (VBN found) (PP (IN in) (NP (BASENP (NN ice) (NNS grains)) (PP (IN of) (NP (BASENP (NNP Saturn) (POS 's)) (BASENP (NNP E) (NNP ring))))))))))) (CC but) (S (NP (BASENP (DT the) (NN link)) (PP (TO to) (BASENP (JJ subsurface) (NN salt) (NN water)))) (VP (VP (VBD was) (RB not)) (ADJP (JJ definitive))))) (PERIOD .))