(IP 
  (NP-SBJ 
    (NP 
      (NP-PN 
        (NR 非洲))
                    
      (QP 
        (CD 一些))
                    
      (NP 
        (NN 国家)))
                    
    (NP 
      (NN 领导人)))
                    
  (VP 
    (VP 
      (PP-TMP 
        (P 在)
                    
        (NP 
          (CP-APP 
            (IP 
              (NP-SBJ 
                (-NONE- *PRO*))
                    
              (VP 
                (ADVP 
                  (AD 积极))
                    
                (VP 
                  (VV 斡旋))))
                    
            (DEC 的))
                    
          (NP 
            (NN 同时))))
                    
      (PU ，)
                    
      (QP-ADV 
        (CD 多)
                    
        (CLP 
          (M 次)))
                    
      (VP 
        (VV 召开)
                    
        (NP-OBJ 
          (NP 
            (ADJP 
              (JJ 有关))
                    
            (NP 
              (NN 国家)))
                    
          (NP 
            (NN 首脑)
                    
            (NN 会议)))))
                    
    (PU ，)
                    
    (VP 
      (VV 希望)
                    
      (IP-OBJ 
        (NP-SBJ 
          (-NONE- *PRO*))
                    
        (VP 
          (VV 促成)
                    
          (IP-OBJ 
            (NP-SBJ 
              (ADJP 
                (JJ 交战))
                    
              (NP 
                (PN 双方)))
                    
            (VP 
              (ADVP 
                (AD 最终))
                    
              (VP 
                (VV 达成)
                    
                (NP-OBJ 
                  (NN 停火)
                    
                  (NN 协议)))))))))
                    
  (PU 。))
arg0: 
                    *PRO*