What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_7: T_3(x_7) or P_1(x_7). forall x_7: T_3(x_7) -> Q_7(x_7). forall x_7: P_1(x_7) -> P_7(x_7). forall x_7: P_7(x_7) <-> Q_7(x_7).
forall x_7: P_7(x_7) -> Q_7(x_7). forall x_7: Q_7(x_7) -> P_7(x_7).