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_1(g_1). forall x_4: R_3(x_4) <-> S_1(x_4). R_3(g_1) or q.
forall x_4: R_3(x_4) -> S_1(x_4) can be inferred via the universal biconditional elimination rule. forall x_4: S_1(x_4) -> R_3(x_4) can be inferred via the universal biconditional elimination rule.