(S (S (NP (BASENP (NNS Families)) (PP (IN of) (NP (BASENP (JJ Spanish) (NNS sailors)) (VP (VBG being) (VP (VBN held) (PP (IN for) (BASENP (QP (RB over) (DT a)) (NN month)))))))) (VP (VP (VP (VBD appealed) (PP (TO to) (NP (BASENP (NNP Spain) (POS 's)) (NN government)))) (PP (IN on) (BASENP (NNP Friday)))) (S (VP (TO to) (VP (VP (VB negotiate) (PP (IN with) (BASENP (DT the) (JJ Somali) (NNS pirates)))) (PP (IN for) (BASENP (PRPD their) (NN release)))))))) (PERIOD .))