(PP-LOC 
  (P 在)
                    
  (LCP 
    (NP 
      (CP 
        (WHNP-1 
          (-NONE- *OP*))
                    
        (CP 
          (IP 
            (NP-PN-SBJ 
              (NR 联合国))
                    
            (VP 
              (PP-TMP 
                (P 自)
                    
                (LCP 
                  (NP 
                    (NT １９９３年))
                    
                  (LC 以来)))
                    
              (VP 
                (MSP 所)
                    
                (VP 
                  (VV 监测)
                    
                  (NP-OBJ 
                    (-NONE- *T*-1))))))
                    
          (DEC 的)))
                    
      (QP 
        (CD １４３)
                    
        (CLP 
          (M 个)))
                    
      (NP 
        (NN 国家)))
                    
    (LC 中)))
arg0: 
                    联合国 
                
arg1: 
                    *T*-1 
                
argm: 
                    自 １９９３年 以来