(VP 
  (VV 要求)
                    
  (NP-OBJ 
    (NN 美军))
                    
  (IP 
    (NP-SBJ 
      (-NONE- *PRO*))
                    
    (VP 
      (VP 
        (ADVP 
          (AD 立即))
                    
        (VP 
          (VV 停止)
                    
          (NP-OBJ 
            (DNP 
              (PP 
                (P 对)
                    
                (NP 
                  (NP-PN 
                    (NR 伊))
                    
                  (NP 
                    (NN 北部)
                    
                    (NN 地区))))
                    
              (DEG 的))
                    
            (NP 
              (PU “)
                    
              (NN 侵犯)
                    
              (PU ”)))))
                    
      (PU ，)
                    
      (VP 
        (VV 以免)
                    
        (IP-OBJ 
          (NP-SBJ 
            (NN 事态))
                    
          (VP 
            (ADVP 
              (AD 进一步))
                    
            (VP 
              (VV 恶化))))))))
arg0: 
                    *PRO* 
                
arg1: 
                    事态 进一步 恶化