there the surfer narrowed on they afraid about .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (RB_1 there) (NP_5 (DT_0 the) (NN_2 surfer))) (VP_3 (ATVP_3 (VBD_2 narrowed) (PRT_0 (RP_0 on))) (S_2 (NP_1 (PRP_1 they)) (ADJP_0 (JJ_1 afraid) (PP_1 (IN_1 about)))))) (DOT_0 .)))