They sitting on over the group who hulking .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (ATVP_2 (ATVP_0 (VBG_0 sitting) (PRT_0 (RP_0 on))) (PP_0 (IN_1 over) (NP_4 (DT_0 the) (NN_2 group)))) (SBAR_0 (WHNP_0 (WP_0 who)) (S_2 (VBG_0 hulking))))) (DOT_0 .)))