then , the boy across addition looked doing up .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (ADVP_0 (RB_0 then)) (COMMA_0 ,)) (NP_0 (NP_5 (DT_0 the) (NN_2 boy)) (PP_1 (IN_1 across) (NP_2 (NN_3 addition))))) (VP_3 (VBD_1 looked) (VP_2 (VBG_0 doing) (PRT_0 (RP_0 up))))) (DOT_0 .)))