(S (S (BASENP (DT The) (JJ pre-election) (NN debate)) (VP (ADVP (RB traditionally)) (VP (VP (VBZ lasts) (BASENP (NN 90) (NNS minutes))) (CC and) (VP (VP (VBZ occurs) (PP (IN at) (BASENP (NN 1930)))) (PP (IN on) (NP (BASENP (DT the) (JJ first) (NNP Sunday)) (PP (IN of) (BASENP (DT the) (NN campaign))))))))) (PERIOD .))