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_10: P_10(x_10) or Q_10(x_10). forall x_10: P_10(x_10) -> R_10(x_10). forall x_10: R(x_10) -> ~R_10(x_10). forall x_10: Q_10(x_10) -> R_10(x_10). exists x_10: R(x_10) -> Q_5(x_10). forall x_10: Q_5(x_10) -> R(x_10).
forall x_10: R_10(x_10) can be inferred via the universal disjunction elimination rule. exists x_10: R(x_10) <-> Q_5(x_10) can be inferred via the existential biconditional introduction rule. exists x_10: Q_5(x_10) <-> R(x_10) can be inferred via the existential biconditional introduction rule.