(IP (NP-SBJ (CP (WHNP-1 (-NONE- *OP*))
(IP (NP-SBJ (-NONE- *pro*))
(VP (NP-TMP (-NONE- *T*-1))
(ADVP (AD 免))
(VP (VV 徵)))))
(NP (NN 期间)))
(VP (IP-ADV (NP-SBJ (-NONE- *PRO*))
(VP (ADVP (AD 最))
(VP (VA 长))))
(VP (QP-PRD (CD 三)
(CLP (M 年))))))
ARG1: *pro*
ARGM-ADV: 免
ARGM-TMP: *T*-1
REL: 徵