(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (ADVP 
      (AD 十足))
                    
    (VP 
      (VC 是)
                    
      (NP-PRD 
        (CP 
          (WHPP-2 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *pro*))
                    
              (VP 
                (PP-TMP 
                  (-NONE- *T*-2))
                    
                (VP 
                  (VP 
                    (VV 含饴弄孙))
                    
                  (PU 、)
                    
                  (VP 
                    (ADVP 
                      (AD 不))
                    
                    (VP 
                      (VV 问)
                    
                      (NP-OBJ 
                        (NN 世事) ))))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 年岁) )))))
arg0: 
                    *pro* 
                
argm: 
                    *T*-2