(NP-SBJ 
  (-NONE- *pro*))
                    
(VP 
  (VV 去往)
                    
  (NP-OBJ 
    (NP-PN 
      (NR 克拉维夫))
                    
    (NP 
      (NN 机场)))))
arg0: 
                    *pro*          
                
arg1: 
                    克拉维夫 机场