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_14: R_2(x_14) <-> P_11(x_14). forall x_14: ~P_14(x_14) or R_2(x_14). forall x_14: P_14(x_14) or U(x_14). forall x_14: U(x_14) -> W(x_14). forall x_14: P_11(x_14) <-> W(x_14).
forall x_14: U(x_14) or R_2(x_14) can be inferred via the universal resolution rule. forall x_14: R_2(x_14) -> P_11(x_14) can be inferred via the universal biconditional elimination rule. forall x_14: P_11(x_14) -> W(x_14) can be inferred via the universal biconditional elimination rule. forall x_14: P_11(x_14) -> R_2(x_14) can be inferred via the universal biconditional elimination rule. forall x_14: W(x_14) -> P_11(x_14) can be inferred via the universal biconditional elimination rule.