(IP 
  (NP-SBJ 
    (CP 
      (WHNP-8 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *T*-8))
                    
          (VP 
            (VV 让)
                    
            (NP-OBJ 
              (NN 医生))
                    
            (IP 
              (NP-SBJ 
                (-NONE- *PRO*))
                    
              (VP 
                (VA 惊奇)))))
                    
        (DEC 的))))
                    
  (VP 
    (VC 是)
                    
    (PU ，)
                    
    (IP-PRD 
      (NP-SBJ 
        (CP 
          (WHNP-9 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-9))
                    
              (VP 
                (ADVP 
                  (AD 最后))
                    
                (VP 
                  (VV 出生))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 老六)))
                    
      (VP 
        (ADVP 
          (AD 一直))
                    
        (VP 
          (VP 
            (VA 平安))
                    
          (VP 
            (VE 无)
                    
            (NP-OBJ 
              (NN 事))))))))
arg0: 
                    *PRO*