(IP 
  (NP-SBJ 
    (PN 这))
                    
  (VP 
    (VV 可能)
                    
    (VP 
      (ADVP 
        (AD 也))
                    
      (VP 
        (VC 是)
                    
        (NP-PRD 
          (CP 
            (WHPP-3 
              (-NONE- *OP*))
                    
            (CP 
              (IP 
                (ADVP 
                  (AD 後来))
                    
                (NP-SBJ 
                  (NN 收尾))
                    
                (VP 
                  (PP-PRP 
                    (-NONE- *T*-3))
                    
                  (VP 
                    (VA 草率))))
                    
              (DEC 的)))
                    
          (NP 
            (NN 原因)))))))
arg0: 
                    收尾 
                
argm: 
                    *T*-3 
                
argm: 
                    後来