if finger happened them back sprawled a heavy friend .
(ROOT_0 (S_0 (ATS_3 (NP_1 (IN_2 if) (NN_3 finger)) (VP_4 (ATVP_1 (ATVP_4 (VBD_2 happened) (NP_1 (PRP_0 them))) (ADVP_0 (RB_0 back))) (VP_1 (VBN_0 sprawled) (NP_1 (ATNP_1 (DT_0 a) (JJ_1 heavy)) (NN_0 friend))))) (DOT_0 .)))