(IP (NP-SBJ (-NONE- *pro*))
(VP (ADVP (AD 都))
(VP (VC 是)
(NP-PRD (CP (WHNP-2 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-2))
(VP (VV 使)
(NP-OBJ (NN 投资)
(NN 人))
(IP (NP-SBJ (-NONE- *PRO*))
(VP (VV 心存)
(NP-OBJ (NN 观望))))))
(DEC 的)))
(NP (NN 因素))))))
ARG0: *PRO*
ARG1: 观望
REL: 心存