Plus The group downright moved then howled a back cluster , the schoolhouse boulders .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 Plus) (NP_1 (DT_1 The) (NN_2 group))) (VP_3 (ATVP_1 (ATVP_4 (ADVP_0 (RB_0 downright)) (VBN_0 moved)) (ADVP_0 (RB_0 then))) (VP_5 (VBD_1 howled) (NP_3 (ATNP_0 (NP_6 (ATNP_1 (DT_0 a) (JJ_1 back)) (NN_1 cluster)) (COMMA_0 ,)) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 schoolhouse)) (NNS_1 boulders)))))) (DOT_0 .)))