(IP 
  (NP-SBJ 
    (NP-PN 
      (NR 美国))
                    
    (NP 
      (NN 总统)))
                    
  (VP 
    (LCP-TMP 
      (IP 
        (NP-SBJ 
          (-NONE- *PRO*))
                    
        (VP 
          (VV 遭遇)
                    
          (NP-OBJ 
            (NN 危机))))
                    
      (LC 後))
                    
    (VP 
      (ADVP 
        (AD 又))
                    
      (VP 
        (VV 解救)
                    
        (NP-OBJ 
          (NN 危机))))))
arg0: 
                    美国 总统 
                
arg1: 
                    危机 
                
argm: 
                    又 
                
argm: 
                    *PRO* 遭遇 危机 後