arc(r_0142_0002__had,r_0142_0001__I,arg0).
arc(r_0142_0002__had,r_0142_0004__son,arg1).
arc(r_0142_0004__son,r_0142_0001__I,genv).
arc(r_0142_0006__think,r_0142_0004__son,r_0142_0007__of__clr).

( (IP-MAT (NP-SBJ (PRO I;{I}))
          (HVD;~Tn had;{have})
          (NP-OB1 (NP-GENV (PRO;_genm_ my;{my}))
                  (N son;{son})
                  (IP-INF-REL (TO to;{to})
                              (VB think;{think})
                              (PP-CLR (P-ROLE of;{of})
                                      (NP *T*))))
          (PUNC .))
  (ID 142_a_loosechange))