by potatoes , he used up to the group who to .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 by) (NP_3 (NNS_1 potatoes))) (COMMA_0 ,)) (NP_0 (PRP_1 he))) (VP_3 (ATVP_3 (VBD_2 used) (PRT_0 (RP_0 up))) (PP_2 (TO_0 to) (NP_3 (NP_5 (DT_0 the) (NN_2 group)) (SBAR_0 (WHNP_0 (WP_0 who)) (S_2 (TO_0 to))))))) (DOT_0 .)))