What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? P(f) or ~p_3. forall x_13: P(x_13) -> Q_13(x_13). forall x_13: Q_13(x_13) -> P(x_13).
p_3 -> P(f). forall x_13: P(x_13) <-> Q_13(x_13). forall x_13: Q_13(x_13) <-> P(x_13).