What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? w <-> u. ~u. forall x_14: R_14(x_14) -> S_14(x_14). ~S_14(a_14).
~u and ~S_14(a_14). ~S_14(a_14) and ~u. w -> u. u -> w. ~w.