(IP (NP-SBJ (DP (DT 这)
(CLP (M 个)))
(NP (NN 快乐)
(NN 幸福)))
(VP (ADVP (AD 才))
(VP (VC 是)
(NP-PRD (CP (WHNP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-1))
(VP (VCD (VV 持久)
(VV 恒真))))
(DEC 的)))))))
ARG0: *T*-1
REL: 恒真