(IP (ADVP (AD 但是))
(PU ，)
(NP-SBJ (QP (CD 许多))
(NP (NN 兼并)))
(VP (ADVP (AD 明显))
(VP (VC 是)
(NP-PRD (CP (WHNP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ (NN 公司))
(VP (PP-PRP (P 为)
(IP (NP-SBJ (-NONE- *PRO*))
(VP (VRD (VV 生存)
(VV 下去)))))
(VP (MSP 而)
(VP (ADVP (AD 不得不))
(VP (VV 采取)
(NP-OBJ (-NONE- *T*-1)))))))
(DEC 的)))
(NP (NN 行动))))))
ARG0: *PRO*
REL: 生存