( (CP (IP (NP-TMP (CP (WHPP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *PRO*))
(VP (PP-TMP (-NONE- *T*-1))
(VP (VV 生产))))
(DEC 的)))
(NP (NN 时候)))
(PU ，)
(CP-CND (ADVP (CS 如果))
(CP (IP (NP-SBJ (-NONE- *PRO*))
(VP (VC 是)
(VP (ADVP (AD 自然))
(VP (VV 分娩)))))
(SP 的话)))
(VP (VC 是)
(VP (VV 要)
(VP (VV 消耗)
(NP-OBJ (NP (ADJP (ADVP (AD 很))
(ADJP (JJ 长)))
(NP (NN 时间)))
(CC 和)
(NP (NP (NN 精力))))))))
(SP 的)
(PU ，)))
ARGM-DIS: 如果
ARG0: *PRO*
ARGM-ADV: 自然
REL: 分娩