the thunder option , calculations was shaking then .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_0 (NP_6 (ATNP_1 (DT_0 the) (NN_3 thunder)) (NN_1 option)) (COMMA_0 ,)) (NNS_0 calculations)) (VP_4 (VBD_1 was) (VP_2 (VBG_0 shaking) (ADVP_0 (RB_0 then))))) (DOT_0 .)))