(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (VV 有望)
                    
    (IP-OBJ 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (VP 
          (PP-LOC 
            (P 于)
                    
            (LCP 
              (NP 
                (NT １９９８年))
                    
              (LC 底)))
                    
          (VP 
            (VV 制出)
                    
            (NP-OBJ 
              (NN 样车))))
                    
        (PU ，)
                    
        (VP 
          (NP-TMP 
            (NT １９９９年)
                    
            (NT ４月))
                    
          (ADVP 
            (AD 正式))
                    
          (VP 
            (VV 投产)))))))
arg0: 
                    *PRO* 
                
arg1: 
                    样车 
                
argm: 
                    于 １９９８年 底