(S (S (S (S (BASENP (DT The) (NN discussion)) (VP (VP (VBD took) (BASENP (NN place))) (PP (IN for) (BASENP (QP (RB over) (DT an)) (NN hour))))) (S (NP (BASENP (NNS politicians)) (PP (IN from) (BASENP (DT both) (NNS sides)))) (VP (VBD took) (NP (BASENP (NN part)) (PP (IN in) (NP (BASENP (DT a) (NN discussion)) (SBAR (WHADVP (WRB where)) (S (BASENP (NN anger)) (VP (VBD was) (VP (ADVP (RB clearly)) (VBN shown))))))))))) (COMMA ,) (SBAR (IN before) (S (BASENP (DT the) (NN two) (NNS parties)) (VP (VBD decided) (SBAR (S (BASENP (DT a) (JJ secret) (NN ballot)) (VP (VBD was) (ADJP (JJ acceptable))))))))) (PERIOD .))