sure sturdy boulders , crumpled at the Jeep .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_2 (ATNP_0 (JJ_0 sure) (JJ_1 sturdy)) (NP_3 (NNS_1 boulders))) (COMMA_0 ,)) (VP_4 (VBN_0 crumpled) (PP_0 (IN_1 at) (NP_5 (DT_0 the) (NN_2 Jeep))))) (DOT_0 .)))