(IP (ADVP (AD 但))
(NP-SBJ (CP (WHNP-2 (-NONE- *OP*))
(CP (IP (IP (NP-SBJ (-NONE- *T*-2))
(VP (VV 深居)
(NP-OBJ (NN 密林))))
(PU 、)
(IP (NP-TPC (-NONE- *T*-2))
(NP-SBJ (NN 分布)
(NN 范围))
(VP (VA 局限))))
(DEC 的)))
(NP (NN 百步蛇)))
(VP (ADVP (AD 仍))
(VP (VV 乏人问津))))
ARG0: *T*-2
ARG1: 密林
REL: 深居