(S (S (NP (NP (BASENP (DT A) (JJ peaceful) (NN protest)) (PP (IN in) (BASENP (NNP Sarajevo)))) (PRN (COMMA ,) (VP (VP (VBG lasting) (PP (IN for) (BASENP (JJ several) (NNS weeks)))) (ADVP (RB so) (RB far))) (COMMA ,))) (VP (VBD was) (VP (VBN ignited) (PP (IN by) (NP (BASENP (DT a) (NN post)) (PP (IN on) (NP (BASENP (DT an) (JJ online) (NN discussion) (NN board)) (COMMA ,) (BASENP (NNP Sarajevo-X))))))))) (PERIOD .))