(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (NP-TMP 
      (NT 一九五五年))
                    
    (VP 
      (VP 
        (VV 赴)
                    
        (NP-PN-OBJ 
          (NR 苏联)
                    
          (NR 莫斯科)
                    
          (NR 斯大林)
                    
          (NN 汽车厂)))
                    
      (VP 
        (VV 实习)))))
arg0: 
                    *pro* 
                
argm: 
                    一九五五年