a thunder shifted murky on his friend .
(ROOT_0 (S_0 (ATS_3 (NP_0 (DT_0 a) (NN_2 thunder)) (VP_2 (ATVP_4 (VBN_0 shifted) (ADJP_0 (JJ_0 murky))) (PP_2 (IN_0 on) (NP_3 (PRPDOLLAR_0 his) (NN_0 friend))))) (DOT_0 .)))