(S (S (S (VP (VBG Ruling) (SBAR (IN that) (S (NP (BASENP (DT the) (NN change)) (SBAR (S (VP (TO to) (VP (VB require) (NP (BASENP (DT the) (NN use)) (PP (IN of) (BASENP (DT a) (NN rubber) (NN stamp))))))))) (VP (VBZ is) (PP (IN in) (NP (BASENP (NN contravention)) (PP (IN of) (BASENP (NN election) (NN law)))))))))) (COMMA ,) (S (BASENP (NNP Judge) (NNP Anuwat) (NNP Tharasawaeng)) (VP (VBD highlighted) (SBAR (IN that) (S (BASENP (NN election) (NN law)) (VP (VP (VBZ does) (RB not)) (VP (VB mandate) (SBAR (WHADVP (WRB how)) (S (BASENP (DT a) (NN mark)) (VP (MD must) (VP (VB be) (VP (VBN made) (PP (IN on) (BASENP (DT the) (NN ballot))))))))))))))) (PERIOD .))