(CP 
  (WHNP-1 
    (-NONE- *OP*))
                    
  (CP 
    (IP 
      (NP-SBJ 
        (-NONE- *T*-1))
                    
      (VP 
        (VV 分别)
                    
        (QP-EXT 
          (CD 五十)
                    
          (CLP 
            (M 年)))))
                    
    (DEC 的)))
                    
(NP 
  (NN 家庭)))
arg0: 
                    *T*-1 -> 家庭          
                
argm: 
                    五十 年