on big surfers , The spoke warily ahead scared .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 on) (NP_3 (JJ_1 big) (NNS_0 surfers))) (COMMA_0 ,)) (NP_0 (DT_1 The))) (VP_3 (VBD_1 spoke) (ADJP_0 (ATADJP_0 (RB_0 warily) (RB_1 ahead)) (VBN_0 scared)))) (DOT_0 .)))