They slid to get clouds of in the thick perch nap , .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBD_2 slid) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 get) (NP_1 (ATNP_2 (NP_4 (NNS_1 clouds)) (PP_2 (IN_0 of) (PP_2 (IN_0 in) (NP_6 (ATNP_1 (ATNP_1 (DT_0 the) (JJ_1 thick)) (NN_0 perch)) (NN_1 nap))))) (COMMA_0 ,))))))) (DOT_0 .)))