The legs gaze when they spit to be classes .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 The) (NNS_0 legs)) (VP_4 (VBP_0 gaze) (SBAR_0 (WHADVP_0 (WRB_0 when)) (S_1 (NP_0 (PRP_1 they)) (VP_5 (VBD_2 spit) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 be) (NP_3 (NNS_1 classes)))))))))) (DOT_0 .)))