(S (S (NP (NP (BASENP (DT An) (JJ angry) (NN crowd)) (PP (IN of) (BASENP (QP (RB around) (NN 600)) (NNS protesters)))) (PRN (COLON -) (S (BASENP (DT some) (NNS reports)) (VP (VBP say) (SBAR (FRAG (BASENP (NNS thousands)))))) (COLON -))) (VP (VBD gathered) (PP (IN at) (NP (NP (BASENP (NNPS Martyrs) (POS ')) (NNP Square)) (COMMA ,) (PP (IN outside) (BASENP (DT the) (JJ presidential) (NN palace))))))) (PERIOD .))