What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_13: T(x_13). forall x_13: P_11(x_13) <-> Q_11(x_13). forall x_13: T(x_13) -> P_11(x_13). forall x_13: Q_11(x_13) <-> Q_13(x_13).
forall x_13: P_11(x_13). forall x_13: P_11(x_13) -> Q_11(x_13). forall x_13: Q_11(x_13) -> Q_13(x_13). forall x_13: Q_11(x_13) -> P_11(x_13). forall x_13: Q_13(x_13) -> Q_11(x_13).