but , class across too know murky .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (CC_0 but) (COMMA_0 ,)) (NP_0 (NP_5 (NN_3 class)) (PP_0 (IN_1 across) (NP_2 (RB_1 too))))) (VP_3 (VBP_0 know) (ADJP_0 (JJ_0 murky)))) (DOT_0 .)))