(S (S (BASENP (NNP NASA)) (VP (VBZ has) (VP (VBN announced) (SBAR (IN that) (S (BASENP (DT the) (NNP Cassini) (NN spacecraft)) (VP (VBZ has) (VP (VBN found) (SBAR (WHNP (WP what)) (S (VP (VBP seem) (S (VP (TO to) (VP (VB be) (NP (BASENP (NNS geysers)) (VP (VP (VBG spewing) (BASENP (NN water))) (PP (IN on) (BASENP (DT the) (NN moon) (NNP Enceladus)))))))))))))))))) (PERIOD .))