(IP (NP-SBJ (DP (DT 这) (CLP (M 种))) (NP (NN 方法))) (VP (ADVP (AD 不)) (VP (VV 会) (VP (VV 污染) (NP-OBJ (NN 环境))))) (PU 。))
ARG0: 这 种 方法
ARG1: 环境
REL: 污染
(NP-OBJ (DP (DT 这) (CLP (M 个))) (CP (WHNP-2 (-NONE- *OP*)) (CP (IP (NP-SBJ (-NONE- *T*-2)) (VP (ADVP (AD 严重)) (VP (VV 污染)))) (DEC 的))) (ADJP (QP (OD 第三)) (ADJP (JJ 大))) (NP (NN 淡水湖)))
ARG1: (*T*-2)->(第三大淡水湖)
ARGM-ADV: 严重
REL: 污染