`` on gravel white <apostrophe><apostrophe> <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (ATS_0 (TICK_0 ``) (PP_2 (IN_0 on) (NP_3 (NN_3 gravel) (JJ_0 white)))) (APOSTROPHE_0 <apostrophe><apostrophe>)) (APOSTROPHE_0 <apostrophe><apostrophe>)))