(IP (NP-SBJ (PU 「)
(DNP (NP (NN 场地))
(DEG 的))
(NP (NN 限制))
(PU 」))
(VP (ADVP (AD 则))
(VP (VC 是)
(NP-PRD (CP (WHNP-2 (-NONE- *OP*))
(CP (IP (NP-SBJ (NN 捶丸))
(VP (NP-PRP (-NONE- *T*-2))
(VP (VP (ADVP (AD 逐渐))
(VP (VV 冷却)))
(PU ，)
(VP (ADVP (AD 并))
(ADVP (AD 未))
(ADVP (AD 广泛))
(VP (VV 流行))))))
(DEC 的)))
(NP (NN 原因))))))
ARG1: 捶丸
ARGM-ADV: 逐渐
ARGM-PRP: *T*-2
REL: 冷却