(S (S (NP (BASENP (NNP Cassini) (POS 's)) (BASENP (JJ ultraviolet) (NN imaging) (NN spectrograph))) (VP (ADVP (RB also)) (VP (ADVP (RB recently)) (VP (VBD obtained) (NP (BASENP (JJ complementary) (NNS results)) (SBAR (WHNP (WDT that)) (S (VP (VBP support) (NP (BASENP (DT the) (NN presence)) (PP (IN of) (BASENP (DT a) (JJ subsurface) (NN ocean)))))))))))) (PERIOD .))