you used as position , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (S_1 (NP_0 (PRP_1 you)) (VP_5 (VBD_2 used) (PP_2 (IN_0 as) (NP_5 (NN_3 position)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))