( (IP-MAT (PP-SBJ (NP (IP-REL (NP-SBJ *T*)
                              (PP (NP (IP-EMB (NP-SBJ *arb*)
                                              (PP-OB1 (NP (N 虫歯))
                                                      (P-OPTR は))
                                              (VB 予防)
                                              (VB0 する))
                                      (N の))
                                  (P-ROLE に))
                              (VB 越し)
                              (AXD た))
                      (N こと))
                  (P-OPTR は))
          (ADJI ない)
          (PU 。))
  (ID 350_textbook_djg_advanced;page_398;JP))