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: R_10(x_10) -> S_10(x_10). R_10(a) or w. w <-> S_10(a).
w -> S_10(a) can be inferred via the biconditional elimination rule. S_10(a) -> w can be inferred via the biconditional elimination rule.