(IP 
  (IP-CND 
    (NP-SBJ 
      (CP 
        (WHNP-2 
          (-NONE- *OP*))
                    
        (IP 
          (NP-SBJ 
            (-NONE- *T*-2))
                    
          (VP 
            (VV 参加))))
                    
      (NP 
        (NN 者)))
                    
    (VP 
      (ADVP 
        (CS 若))
                    
      (VP 
        (VV 想)
                    
        (IP-OBJ 
          (NP-SBJ 
            (-NONE- *PRO*))
                    
          (VP 
            (VV 退出))))))
                    
  (PU ，)
                    
  (NP-SBJ 
    (NN 业者))
                    
  (VP 
    (ADVP 
      (AD 不))
                    
    (VP 
      (VV 可以)
                    
      (VP 
        (VV 胁迫)
                    
        (CC 或是)
                    
        (VV 刁难)))))
arg0: 
                    业者 
                
argm: 
                    *OP* *T*-2 参加 者 若 想 *PRO* 退出 
                
argm: 
                    不