(IP-OBJ 
  (NP-SBJ 
    (QP 
      (CD ４８００多万))
                    
    (NP-PN 
      (NR 美国))
                    
    (NP 
      (NN 老年人)))
                    
  (VP 
    (PP-TMP 
      (P 在)
                    
      (LCP 
        (IP 
          (NP-SBJ 
            (-NONE- *PRO*))
                    
          (VP 
            (VV 迈入)
                    
            (NP-OBJ 
              (NT ２０００年))))
                    
        (LC 时)))
                    
    (VP 
      (VV 能够)
                    
      (VP 
        (NP-ADV 
          (DP 
            (DT 每))
                    
          (NP 
            (NN 月)))
                    
        (ADVP 
          (AD 按时))
                    
        (VP 
          (VV 领到)
                    
          (NP-OBJ 
            (DNP 
              (NP 
                (PN 他们))
                    
              (DEG 的))
                    
            (NP 
              (NN 社会)
                    
              (NN 补助)
                    
              (CC 和)
                    
              (NN 退休)
                    
              (NN 津贴))))))))
arg0: 
                    *PRO* 
                
arg1: 
                    ２０００年