because gravel was there <apostrophe>s muffled gone from the car .
(ROOT_0 (S_0 (ATS_3 (NP_1 (IN_2 because) (NN_3 gravel)) (VP_4 (ATVP_1 (VBD_0 was) (RB_1 there)) (VP_5 (VBZ_0 <apostrophe>s) (NP_2 (NP_4 (JJ_1 muffled)) (VP_2 (VBN_0 gone) (PP_0 (IN_1 from) (NP_5 (DT_0 the) (NN_2 car)))))))) (DOT_0 .)))