( 
  (IP 
    (NP-SBJ 
      (DNP 
        (NP 
          (NN 投资)
                    
          (NN 增速))
                    
        (DEG 的))
                    
      (NP 
        (NN 加快)))
                    
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (VV 拉动)
                    
                (NP-OBJ 
                  (NN 经济)
                    
                  (NN 增长))))
                    
            (DEC 的)))
                    
        (ADJP 
          (JJ 主要))
                    
        (NP 
          (NN 因素))))
                    
    (PU 。)))
arg0: 
                    *T*-1 
                
arg1: 
                    经济 增长