This boy was hard chin <apostrophe>s climbing dude .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 This) (NN_2 boy)) (VP_4 (VBD_1 was) (NP_2 (NP_4 (ATNP_0 (JJ_0 hard) (NN_0 chin)) (POS_0 <apostrophe>s)) (VP_2 (VBG_0 climbing) (NP_5 (NN_3 dude)))))) (DOT_0 .)))