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_14(a_14) -> ~r. r. R_14(a_14) -> p. p -> R_14(a_14). forall x_14: R_14(x_14) <-> S_14(x_14).
~S_14(a_14) can be inferred via the modus tollens rule. forall x_14: R_14(x_14) -> S_14(x_14) can be inferred via the universal biconditional elimination rule. forall x_14: S_14(x_14) -> R_14(x_14) can be inferred via the universal biconditional elimination rule.