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 y_3: P_3(y_3) -> U_3(y_3). forall y_3: U_3(y_3) -> R_2(y_3). forall y_3: R_2(y_3) -> P_3(y_3).
forall y_3: P_3(y_3) -> R_2(y_3) can be inferred via the universal transitivity rule. forall y_3: U_3(y_3) -> P_3(y_3) can be inferred via the universal transitivity rule. forall y_3: R_2(y_3) -> U_3(y_3) can be inferred via the universal transitivity rule.