(CP 
  (WHNP-2 
    (-NONE- *OP*))
                    
  (CP 
    (IP 
      (NP-SBJ 
        (-NONE- *T*-2))
                    
      (VP 
        (ADVP 
          (AD 很))
                    
        (VP 
          (VV 难办))))
                    
    (DEC 的)))
                    
(NP 
  (NN 事情))))))
arg0: 
                    *T*-2 -> 事情          
                
argm: 
                    很