( (IP (NP-SBJ (CP (WHNP-37 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-37))
(VP (PP-DIR (P 对)
(PU “)
(NP (NN 通行费))
(PU ”))
(VP (VV 喋喋不休))))
(DEC 的)))
(NP (NN 人们)))
(VP (ADVP (AD 通常))
(ADVP (AD 不))
(DFL (PU ＋))
(VP (VV 知道)
(IP-OBJ (IP-SBJ (NP-SBJ (-NONE- *PRO*))
(VP (VP (VV 运营)
(NP-OBJ (-NONE- *RNR*-38)))
(CC 和)
(VP (VV 维护)
(NP-OBJ-38 (PN 它)))))
(VP (VV 有)
(VP (ADVP (AD 多么))
(VP (VA 昂贵)))))))
(PU 。)))
ARG0: *T*-37
ARGM-PRP: 对“通行费”
REL: 喋喋不休