(IP 
  (NP-SBJ 
    (DNP 
      (NP 
        (NN 西方)
                    
        (NN 国家))
                    
      (DEG 的))
                    
    (NP 
      (NN 政策)))
                    
  (VP 
    (ADVP 
      (AD 就))
                    
    (VP 
      (VC 是)
                    
      (VP 
        (VV 分裂)
                    
        (NP-OBJ 
          (NN 塞尔维亚人))))))
arg1: 
                    塞尔维亚人 	  	  	  
                

(IP 
  (NP-PN-SBJ 
    (NP-PN 
      (NR 苏梅克)
                    
      (PU —)
                    
      (NR 列维))
                    
    (QP 
      (CD 九)
                    
      (CLP 
        (M 号)))
                    
    (NP 
      (NN 彗星)))
                    
  (VP 
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (NP-PN 
                  (NR 美国))
                    
                (NP 
                  (NN 天文学家)))
                    
              (VP 
                (PP-TMP 
                  (P 在)
                    
                  (NP 
                    (NT 一九九三年)
                    
                    (NT 三月)))
                    
                (VP 
                  (VV 发现)
                    
                  (NP-OBJ 
                    (-NONE- *T*-1)))))
                    
            (DEC 的)))))
                    
    (PU ，)
                    
    (VP 
      (ADVP 
        (AD 现))
                    
      (ADVP 
        (AD 已))
                    
      (VP 
        (VRD 
          (VV 分裂)
                    
          (VV 成))
                    
        (NP-OBJ 
          (QP 
            (CD 二十一)
                    
            (CLP 
              (M 颗)))
                    
          (NP 
            (NN 彗核)))))
                    
    (PU 。)))
arg1: 
                    苏梅克 — 列维 九 号 彗星 	  	  	  
                
argM: 
                    现 	  	  	  
                
argM: 
                    已 	  	  	  
                

(IP 
  (ADVP 
    (AD 但))
                    
  (NP-SBJ 
    (PN 他))
                    
  (VP 
    (VV 表示)
                    
    (PU ，)
                    
    (IP-OBJ 
      (NP-SBJ 
        (PN 他))
                    
      (VP 
        (VV 同意)
                    
        (IP-OBJ 
          (NP-SBJ 
            (-NONE- *PRO*))
                    
          (VP 
            (VP 
              (VV 采取)
                    
              (NP-OBJ 
                (DP 
                  (DT 这)
                    
                  (QP 
                    (CD 一)))
                    
                (NP 
                  (NN 步骤))))
                    
            (PU ，)
                    
            (VP 
              (MSP 以)
                    
              (VP 
                (VV 避免)
                    
                (NP-OBJ 
                  (NP-PN 
                    (NR 阿拉伯))
                    
                  (NP 
                    (NN 国家)))
                    
                (IP 
                  (NP-SBJ 
                    (-NONE- *PRO*))
                    
                  (VP 
                    (ADVP 
                      (AD 进一步))
                    
                    (VP 
                      (VV 分裂)))))))))))
                    
  (PU 。))
arg1: 
                    *PRO* 	  	  	  
                
argM: 
                    进一步