(S (S (PP (VBG According) (PP (TO to) (NP (BASENP (DT a) (NN spokesman)) (PP (IN for) (BASENP (NNP NATO)))))) (COMMA ,) (S (NP (NP (BASENP (DT an) (JJ attempted) (NN hijacking)) (PP (IN of) (NP (BASENP (DT a) (JJ Norwegian) (NN tanker)) (PP (IN in) (NP (BASENP (DT the) (NNP Gulf)) (PP (IN of) (BASENP (NNP Aden)))))))) (PP (IN by) (BASENP (JJ Somali) (NNS pirates)))) (VP (VBZ has) (VP (VBN been) (VP (VBN thwarted) (PP (IN by) (BASENP (NNP NATO) (NNS forces)))))))) (PERIOD .))