She grimaced : group did gravel of knoll .
(ROOT_0 (S_0 (ATS_3 (ATS_4 (S_1 (NP_1 (PRP_0 She)) (VP_5 (VBD_1 grimaced))) (COLON_0 :)) (S_1 (NP_0 (NN_2 group)) (VP_5 (VBD_0 did) (ADJP_0 (JJ_1 gravel) (PP_1 (IN_1 of) (NP_0 (NN_2 knoll))))))) (DOT_0 .)))