They together forced back by on kids .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 They)) (ADVP_0 (RB_0 together))) (VP_3 (ATVP_3 (VBD_2 forced) (PRT_0 (RP_0 back))) (PP_2 (IN_0 by) (PP_2 (IN_0 on) (NP_4 (NNS_1 kids)))))) (DOT_0 .)))