(CP 
  (WHNP-1 
    (-NONE- *OP*))
                    
  (CP 
    (IP 
      (NP-SBJ 
        (PN 我))
                    
      (VP 
        (PP-TMP 
          (P 在)
                    
          (LCP 
            (IP 
              (NP-SBJ 
                (-NONE- *pro*))
                    
              (VP 
                (VV 竞选)))
                    
            (LC 时)))
                    
        (VP 
          (VV 许下)
                    
          (NP-OBJ 
            (-NONE- *T*-1)))))
                    
    (DEC 的)))
                    
(NP 
  (NN 诺言)))))))
arg0: 
                    我          
                
argm: 
                    在 竞选 时          
                
arg1: 
                    *T*-1 -> 诺言