a surfers Noah while I listened up the boy .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (DT_0 a) (NNS_1 surfers)) (PP_0 (ATPP_0 (ADVP_0 (RB_0 Noah)) (IN_2 while)) (NP_1 (PRP_0 I)))) (VP_4 (VBN_0 listened) (PP_0 (IN_0 up) (NP_5 (DT_0 the) (NN_2 boy))))) (DOT_0 .)))