It could was the thunder Of the purple lady and leave .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (MD_0 could) (VP_1 (ATVP_1 (VP_5 (VBD_1 was) (NP_3 (NP_5 (DT_0 the) (NN_2 thunder)) (PP_0 (IN_1 Of) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 purple)) (NN_1 lady))))) (CC_0 and)) (VP_1 (VB_0 leave))))) (DOT_0 .)))