(S (S (S (S (BASENP (NN 91) (NNS ships)) (VP (VBP have) (VP (VBN been) (VP (VP (VBN attacked) (PP (IN by) (BASENP (NNS pirates)))) (PP (IN in) (NP (BASENP (DT the) (NNP Gulf)) (PP (IN of) (BASENP (NNP Arden))))))))) (SBAR (IN since) (S (BASENP (DT the) (NN year)) (VP (VBD began))))) (CONJP (COMMA ,) (CC but)) (S (BASENP (DT the) (NNP Sirius) (NNP Star)) (VP (VP (VBZ is) (ADJP (CC both) (ADJP (DT the) (ADJP (ADJP (JJS largest)) (CC and) (ADJP (ADJP (JJR furthest)) (PP (IN from) (NP (BASENP (NN shore)) (SBAR (S (VP (TO to) (VP (VB be) (VP (VBN taken))))))))))))) (COMMA ,) (S (VP (VBN captured) (PP (NP (BASENP (QP (DT some) (NN 420)) (JJ nautical) (NNS miles)) (PRN (LRB -LRB-) (BASENP (NN 833) (NNS kilometers)) (RRB -RRB-))) (PP (IN from) (NP (BASENP (NNP Somalia) (POS 's)) (NN coast))))))))) (PERIOD .))