(IP 
  (NP-SBJ 
    (DP 
      (DT 此)
                    
      (CLP 
        (M 次)))
                    
    (NP 
      (NN 研讨会)))
                    
  (VP 
    (VV 收到)
                    
    (AS 了)
                    
    (NP-OBJ 
      (QP 
        (CD 一些))
                    
      (CP 
        (WHNP-1 
          (-NONE- *OP*))
                    
        (CP 
          (IP 
            (NP-SBJ 
              (NN 海外)
                    
              (NN 人士))
                    
            (VP 
              (VV 发来)
                    
              (NP-OBJ 
                (-NONE- *T*-1))))
                    
          (DEC 的)))
                    
      (NP 
        (NN 贺电)))))
arg0: 
                    此 次 研讨会 
                
arg1: 
                    一些 *OP* 海外 人士 发来 *T*-1 的 贺电