from perch , he studied below , in the surfers of the thunder .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (PP_2 (IN_0 from) (NP_3 (NN_3 perch))) (COMMA_0 ,)) (NP_0 (PRP_1 he))) (VP_3 (ATVP_3 (ATVP_2 (VBN_0 studied) (ADVP_0 (RB_0 below))) (COMMA_0 ,)) (PP_2 (IN_0 in) (NP_3 (NP_6 (DT_0 the) (NNS_1 surfers)) (PP_0 (IN_1 of) (NP_5 (DT_0 the) (NN_2 thunder))))))) (DOT_0 .)))