knees be up , the group Trailing from trips .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NNS_0 knees)) (VP_4 (ATVP_3 (ATVP_2 (VB_0 be) (PRT_0 (RP_0 up))) (COMMA_0 ,)) (NP_3 (NP_5 (DT_0 the) (NN_2 group)) (SBAR_0 (VP_0 (VBG_0 Trailing) (PP_2 (IN_0 from) (NP_3 (NNS_1 trips)))))))) (DOT_0 .)))