What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_12: R_12(x_12) <-> S_12(x_12). ~S_12(g_2). R_12(g_2) or ~w_1.
w_1 -> R_12(g_2). forall x_12: R_12(x_12) -> S_12(x_12). forall x_12: S_12(x_12) -> R_12(x_12).