the low grass <apostrophe>m could just a lisp .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_1 (DT_0 the) (JJ_1 low)) (NN_0 grass)) (VP_4 (VBP_0 <apostrophe>m) (SBAR_0 (S_2 (VP_0 (ATVP_1 (MD_0 could) (ADVP_0 (RB_0 just))) (NP_5 (DT_0 a) (NN_2 lisp))))))) (DOT_0 .)))