(PP-LOC 
  (P 在)
                    
  (LCP 
    (NP 
      (CP 
        (WHNP-2 
          (-NONE- *OP*))
                    
        (CP 
          (IP 
            (NP-SBJ 
              (-NONE- *T*-2))
                    
            (VP 
              (VCD 
                (VA 郑重)
                    
                (CC 而)
                    
                (VA 融洽))))
                    
          (DEC 的)))
                    
      (NP 
        (NN 讨论)))
                    
    (LC 中)))
arg0: 
                    *T*-2