She slid we knew a good knoll of gravel .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (VBD_0 slid) (SBAR_0 (S_1 (NP_0 (PRP_1 we)) (VP_5 (ATVP_3 (VBD_0 knew) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 good)) (NN_1 knoll))) (PP_0 (IN_1 of) (NP_2 (NN_3 gravel)))))))) (DOT_0 .)))