The fingers be off by the back perch ride .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 The) (NNS_0 fingers)) (VP_4 (ATVP_2 (VB_0 be) (PRT_0 (RP_0 off))) (PP_2 (IN_0 by) (NP_5 (ATNP_1 (ATNP_1 (DT_0 the) (JJ_1 back)) (NN_0 perch)) (NN_1 ride))))) (DOT_0 .)))