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: forall x_17: P_11(x_17) or P_3(x_17). forall x_17: Q_3(x_17) -> ~R_1(x_17). forall x_17: ~P_11(x_17). exists x_17: P_3(x_17) <-> R_1(x_17).
forall x_17: P_3(x_17) can be inferred via the universal disjunctive syllogism rule. exists x_17: P_3(x_17) -> R_1(x_17) can be inferred via the existential biconditional elimination rule. exists x_17: R_1(x_17) -> P_3(x_17) can be inferred via the existential biconditional elimination rule.