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: W(y) -> Q(y). r <-> q. r -> w. w -> W(e).
r -> W(e) can be inferred via the transitivity rule. r -> q can be inferred via the biconditional elimination rule. q -> r can be inferred via the biconditional elimination rule.