What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_12: W(x_12) <-> Q_12(x_12). exists x_12: R_6(x_12) -> R_2(x_12). forall x_12: Q_12(x_12) -> Q_6(x_12). forall x_12: Q_6(x_12) -> R_6(x_12).
forall x_12: Q_12(x_12) -> R_6(x_12). exists x_12: Q_6(x_12) -> R_2(x_12). forall x_12: W(x_12) -> Q_12(x_12). forall x_12: Q_12(x_12) -> W(x_12).