boy could listened She , the car attended had They under friend mounds .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (SBAR_0 (S_1 (NP_0 (NN_2 boy)) (VP_5 (MD_0 could) (VP_1 (VBN_0 listened) (NP_1 (PRP_0 She)))))) (COMMA_0 ,)) (NP_0 (DT_0 the) (NN_2 car))) (VP_3 (VBD_1 attended) (VP_2 (ATVP_4 (VBD_2 had) (NP_1 (PRP_0 They))) (PP_2 (IN_0 under) (NP_3 (NN_0 friend) (NNS_1 mounds)))))) (DOT_0 .)))