(S (S (BASENP (JJ Palestinian) (JJ extremist) (NN group) (NNP Hamas)) (VP (VBZ has) (VP (VBN been) (VP (VBN invited) (S (VP (TO to) (VP (VB meet) (PP (IN with) (NP (BASENP (NNS representatives)) (PP (IN of) (BASENP (DT the) (NNP South) (JJ African) (NN government)))))))))))) (PERIOD .))