(S (S (BASENP (NNP Al) (NNP Jazeera)) (VP (VBZ says) (SBAR (IN that) (S (S (S (BASENP (NN 507) (NNPS Palestinians)) (VP (VBP have) (VP (VBN been) (VP (VBN killed))))) (CC and) (S (BASENP (NN 2,700)) (VP (VBN wounded)))) (SBAR (IN since) (S (NP (BASENP (JJ Israeli) (NNS bombardments)) (PP (IN on) (BASENP (DT the) (NNP Gaza) (NNP Strip)))) (VP (VBD began) (PP (IN in) (BASENP (JJ late) (NNP December)))))))))) (PERIOD .))