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: S(b_2) -> W_1(b_2). forall y_3: S(y_3) <-> W_1(y_3).
forall y_3: S(y_3) -> W_1(y_3) can be inferred via the universal biconditional elimination rule. forall y_3: W_1(y_3) -> S(y_3) can be inferred via the universal biconditional elimination rule.