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In particular, the subadditvity of Kodaira dimensions $\\kappa(K_X+B) \\geq \\kappa(K_F+B_F)+ \\kappa(Z)$ holds, where $F$ is a general fiber, $K_F+B_F= (K_X+B)|_F$, and $\\kappa(Z)$ means the Kodaira dimension of a smooth model of $Z$. We discuss several variants of this result in Section 4. 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