(IP 
  (NP-SBJ 
    (CP 
      (WHNP-2 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *pro*))
                    
          (VP 
            (VV 拿回)
                    
            (NP-OBJ 
              (-NONE- *T*-2))))
                    
        (DEC 的)))
                    
    (NP 
      (NN 价金)))
                    
  (VP 
    (VP 
      (ADVP 
        (AD 不))
                    
      (VP 
        (VV 应)
                    
        (VP 
          (VV 低於)
                    
          (QP-OBJ 
            (DNP 
              (NP 
                (ADJP 
                  (JJ 当初))
                    
                (NP 
                  (NN 进价)))
                    
              (DEG 的))
                    
            (QP 
              (CD 百分之九十))))))))
arg0: 
                    *pro* 
                
arg1: 
                    *T*-2