(S (S (ADVP (RB Additionally)) (COMMA ,) (S (NP (BASENP (NNP Shona) (NNP Lowe)) (COMMA ,) (NP (BASENP (DT a) (NN spokeswoman)) (PP (IN at) (NP (BASENP (NNP NATO) (POS 's)) (BASENP (NNP Northwood) (JJ maritime) (NN command) (NN center)))))) (VP (VBD reported) (SBAR (IN that) (S (BASENP (DT the) (JJ Italian-flagged) (NN tugboat)) (VP (VBD was) (VP (VP (VBN hijacked) (BASENP (DT this) (NN morning))) (PP (IN off) (PP (IN of) (NP (BASENP (NNP Somalia) (POS 's)) (BASENP (JJ northern) (NN coast)))))))))))) (PERIOD .))