(NP 
  (CP 
    (WHNP-3 
      (-NONE- *OP*))
                    
    (CP 
      (IP 
        (NP-SBJ 
          (-NONE- *T*-3))
                    
        (VP 
          (VV 记取)
                    
          (NP-OBJ 
            (DNP 
              (IP 
                (NP-PN-SBJ 
                  (NR 美国))
                    
                (VP 
                  (VV 投掷)
                    
                  (NP-OBJ 
                    (NN 原子弹))))
                    
              (DEG 之))
                    
            (NP 
              (NN 害)))))
                    
      (DEC 的)))
                    
  (NP-PN 
    (NR 日本)
                    
    (NR 广岛)
                    
    (NN 和平)
                    
    (NN 纪念)
                    
    (NN 公园)))
arg0: 
                    美国 
                
arg1: 
                    原子弹