The story have by the classes because up .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 The) (NN_2 story)) (VP_4 (ATVP_4 (VB_0 have) (PP_1 (IN_1 by) (NP_2 (DT_0 the) (NNS_1 classes)))) (ADVP_0 (IN_2 because) (RB_1 up)))) (DOT_0 .)))