(CP 
  (WHNP-1 
    (-NONE- *OP*))
                    
  (CP 
    (IP 
      (NP-SBJ 
        (-NONE- *T*-1))
                    
      (VP 
        (VV 包有)
                    
        (NP-OBJ 
          (NN 橡皮))))
                    
    (DEC 的)))
                    
(NP 
  (NN 金属)
                    
  (NN 子弹)))))
arg0: 
                    *T*-1 -> 金属 子弹          
                
arg1: 
                    橡皮