(IP (NP-SBJ (DP (DT 该)) (NP (NN 信件))) (VP (VC 是) (NP-PRD (CP (WHNP-2 (-NONE- *OP*)) (CP (IP (NP-SBJ (-NONE- *pro*)) (VP (PP-LOC (P 在) (NP (NP (DP (DT 该)) (NP (NN 囚犯))) (NP (NN 面前)))) (VP (VP (VV 开启) (NP-OBJ (-NONE- *RNR*-3))) (CC 和) (VP (VV 搜查) (NP-OBJ-3 (-NONE- *T*-2)))))) (DEC 的))))))
ARG0: *pro*
ARG1: *T*-2
ARGM-LOC: 在 该 囚犯 面前
REL: 搜查
(PP-TMP (P 在) (LCP (IP (NP-SBJ (DP (DT 该)) (NP (NN 信件))) (VP (VP (VV 开启)) (CC 和) (VP (VV 搜查)))) (LC 时)))
ARG1: 该 信件
REL: 搜查