(IP-Q-OBJ 
  (ADVP-WH 
    (AD 为什麽))
                    
  (NP-SBJ 
    (NP 
      (PN 我))
                    
    (NP 
      (NN 妈妈)))
                    
  (VP 
    (VV 喜欢)
                    
    (IP-OBJ 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (VV 看)
                    
        (NP-OBJ 
          (DNP 
            (NP 
              (CP 
                (WHNP-1 
                  (-NONE- *OP*))
                    
                (CP 
                  (IP 
                    (NP-SBJ 
                      (-NONE- *T*-1))
                    
                    (VP 
                      (VA 脏脏)))
                    
                  (DEC 的)))
                    
              (NP-APP 
                (NP-PN 
                  (NR 美国))
                    
                (NP 
                  (NN 西部)
                    
                  (NN 牛仔)))
                    
              (NP-PN 
                (NR 约翰．韦恩)))
                    
            (DEG 的))
                    
          (NP 
            (NN 电影)))))))
arg0: 
                    *T*-1