(S (S (BASENP (DT The) (NNS kidnappers)) (VP (VBP have) (VP (VP (VBN threatened) (S (VP (TO to) (VP (VB kill) (NP (BASENP (NN three)) (PP (IN of) (NP (BASENP (DT the) (NN tuna) (NN trawler) (POS 's)) (NN crew)))))))) (PP (IN after) (NP (BASENP (DT a) (NN stand-off)) (PP (IN with) (BASENP (JJ Spanish) (NNS forces)))))))) (PERIOD .))