(IP (ADVP (AD 但))
(NP-SBJ (CP (WHNP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ (PN 它))
(VP (VV 留给)
(NP-IO (NN 后人))
(NP-OBJ (-NONE- *T*-1))))
(DEC 的)))
(NP (NN 血泪)
(NN 教训)
(CC 与)
(NN 痛苦)
(NN 经验)))
(PU ，)
(VP (ADVP (AD 还))
(VP (VV 需要)
(VP (VV 继续)
(VP (ADVP (AD 认真))
(VP (VV 总结)))))))
ARG0: 它
ARG1: *T*-1
ARG2: 后人
REL: 留给