(IP (ADVP (AD 特别)) (PP-LOC (P 在) (LCP (NP (IP-APP (IP (NP-SBJ (-NONE- *PRO*)) (VP (VV 以毒攻毒))) (PU 、) (IP (NP-SBJ (-NONE- *PRO*)) (VP (VP (ADVP (AD 越)) (VP (VA 毒))) (VP (ADVP (AD 越)) (VP (VA 补)))))) (NP (NN 观念) )) (LC 下))) (PU ,) (NP-SBJ (ADJP (JJ 毒)) (NP (NN 蛇) )) (VP (ADVP (AD 一直)) (VP (VC 是) (NP-PRD (CP (WHNP-1 (-NONE- *OP*)) (CP (IP (NP-SBJ (-NONE- *T*-1)) (VP (VA 珍贵))) (DEC 的))) (NP (NN 山产) )))))
ARG1: *PRO*
REL: 以毒攻毒