(ADVP 
  (CS 即使))
                    
(IP 
  (NP-SBJ-2 
    (NN 轮胎))
                    
  (VP 
    (LB 被)
                    
    (IP-OBJ 
      (NP-SBJ 
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (VA 尖利)))
                    
            (DEC 的)))
                    
        (NP 
          (NN 刀钉)))
                    
      (VP 
        (VV 刺破)
                    
        (NP-OBJ 
          (-NONE- *-2)))))))
argm: 
                    即使           
                
arg1: 
                    轮胎 => *-2          
                
arg0: 
                    尖利 的刀钉