the rounded perch of boy a group teaching by the thunder woke in the back sweater .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 rounded)) (NN_1 perch)) (PP_0 (IN_1 of) (NP_2 (NP_4 (NP_5 (NN_3 boy)) (NP_5 (DT_0 a) (NN_2 group))) (VP_2 (VBG_0 teaching) (PP_2 (IN_0 by) (NP_5 (DT_0 the) (NN_2 thunder))))))) (VP_4 (VBD_2 woke) (PP_0 (IN_1 in) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 back)) (NN_1 sweater))))) (DOT_0 .)))