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: exists x_13: T(x_13) or ~W_1(x_13). forall x_13: W_3(x_13) -> W_1(x_13). forall x_13: W_1(x_13) <-> S(x_13). forall x_13: W_3(x_13) or S(x_13).
exists x_13: W_1(x_13) -> T(x_13) can be inferred via the existential rewriting rule. forall x_13: W_1(x_13) -> S(x_13) can be inferred via the universal biconditional elimination rule. forall x_13: S(x_13) -> W_1(x_13) can be inferred via the universal biconditional elimination rule.