What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_13: ~P_13(x_13). forall x_13: P(x_13) <-> P_3(x_13). forall x_13: Q_3(x_13) <-> P(x_13). exists x_13: P_13(x_13) <-> Q_3(x_13).
forall x_13: P(x_13) -> P_3(x_13). forall x_13: Q_3(x_13) -> P(x_13). exists x_13: P_13(x_13) -> Q_3(x_13). forall x_13: P_3(x_13) -> P(x_13). forall x_13: P(x_13) -> Q_3(x_13). exists x_13: Q_3(x_13) -> P_13(x_13). exists x_13: ~Q_3(x_13).