(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-ADV: 并
REL: 趣