(IP 
  (NP-SBJ 
    (DNP 
      (NP-PN 
        (NR 宋代))
                    
      (DEG 的))
                    
    (NP-PN 
      (NR 开封城)))
                    
  (VP 
    (ADVP 
      (AD 就))
                    
    (VP 
      (VC 是)
                    
      (IP-PRD 
        (ADVP 
          (AD 这麽))
                    
        (IP 
          (IP 
            (NP-SBJ 
              (NN 士农工商))
                    
            (VP 
              (ADVP 
                (AD 相互))
                    
              (VP 
                (VV 交流))))
                    
          (PU 、)
                    
          (IP 
            (NP-SBJ 
              (NN 雅)
                    
              (NN 俗))
                    
            (VP 
              (ADVP 
                (AD 并))
                    
              (VP 
                (VV 趣)))))))))
arg0: 
                    雅 俗 
                
argm: 
                    并