What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: exists x_13: Q_13(x_13). forall x_13: Q_1(x_13). forall x_13: Q_2(x_13) or ~Q_13(x_13).
exists x_13: Q_13(x_13) and Q_1(x_13) can be inferred via the existential conjunction rule. exists x_13: Q_1(x_13) and Q_13(x_13) can be inferred via the existential conjunction rule. forall x_13: Q_13(x_13) -> Q_2(x_13) can be inferred via the universal rewriting rule.