than skin back the boy attended heart .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (PP_1 (IN_1 than) (NP_2 (NN_3 skin) (RB_1 back))) (NP_5 (DT_0 the) (NN_2 boy))) (VP_3 (VBD_1 attended) (NP_2 (NN_3 heart)))) (DOT_0 .)))