all legs had teach of the class how in Zone .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 all) (NNS_0 legs)) (VP_4 (VBD_2 had) (S_2 (VP_0 (ATVP_4 (VB_0 teach) (PP_1 (IN_1 of) (NP_2 (NP_5 (DT_0 the) (NN_2 class)) (FRAG_0 (WRB_0 how))))) (PP_2 (IN_0 in) (NP_6 (NNP_1 Zone))))))) (DOT_0 .)))