(CP (WHNP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ-3 (-NONE- *T*-1))
(VP (LB 被)
(IP-OBJ (NP-SBJ (NN 土石流))
(VP (VV 冲垮)
(NP-OBJ (-NONE- *-3))))))
(DEC 的))
(NP-PN (NR 瑞芳)
(NR 壕洞)
(NN 国小))))
ARG0: 土石流
ARG1: *-3 -> 瑞芳 壕洞 国小
REL: 冲垮