(NP-PRD 
  (CP 
    (WHNP-2 
      (-NONE- *OP*))
                    
    (CP 
      (IP 
        (NP-SBJ 
          (-NONE- *T*-2))
                    
        (VP 
          (PP-TMP 
            (P 在)
                    
            (LCP 
              (NP 
                (NN 节庆))
                    
              (LC 时)))
                    
          (VP 
            (VV 大放))))
                    
      (DEC 的)))
                    
  (NP 
    (NN 烟花)
                    
    (CC 和)
                    
    (NN 鞭炮)))
arg1: 
                    *T*-2 
                
argm: 
                    在 节庆 时