(NP-SBJ 
  (-NONE- *PRO*))
                    
(VP 
  (VP 
    (PP-TMP 
      (P 在)
                    
      (LCP 
        (IP 
          (NP-SBJ 
            (NP-PN 
              (NR 美国))
                    
            (DP 
              (DT 下)
                    
              (CLP 
                (M 届)))
                    
            (NP 
              (NN 总统)))
                    
          (VP 
            (VV 上任)))
                    
        (LC 前)))
                    
    (VP 
      (VV 征得)
                    
      (NP-OBJ 
        (QP 
          (CD １００万)
                    
          (CLP 
            (M 个)))
                    
        (NP 
          (NN 签名)))))
arg0: 
                    *PRO*          
                
argm: 
                    在 美国 下 届 总统 上任 前          
                
arg1: 
                    １００万 个 签名