(IP 
  (ADVP 
    (AD 然而))
                    
  (NP-SBJ 
    (NN 经济)
                    
    (NN 发展))
                    
  (VP 
    (ADVP 
      (AD 不))
                    
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (ADVP 
                  (AD 不))
                    
                (VP 
                  (VV 可)
                    
                  (VP 
                    (VV 逆转)))))
                    
            (DEC 的)))))))
arg1: 
                    *T*-1 
                
argm: 
                    不