to a dented friend are who piled even lesson .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_2 (TO_0 to)) (NP_0 (ATNP_1 (DT_0 a) (JJ_1 dented)) (NN_0 friend))) (VP_3 (VBP_0 are) (SBAR_0 (WHNP_0 (WP_0 who)) (S_2 (VP_0 (ATVP_0 (VBD_2 piled) (ADVP_0 (RB_0 even))) (NP_2 (NN_3 lesson))))))) (DOT_0 .)))