(S (S (BASENP (DT The) (NNP Sirius) (NNP Star)) (VP (VBZ is) (NP (BASENP (DT the) (JJS largest) (NN ship)) (SBAR (S (VP (VP (VP (VBN captured) (PP (IN by) (BASENP (NNS pirates)))) (PP (IN in) (BASENP (DT the) (NN area)))) (PP (TO to) (BASENP (NN date))))))))) (PERIOD .))