What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~u_2. r. u_2 or ~S_24(a_24). forall x_24: R_24(x_24) -> S_24(x_24).
~S_24(a_24). ~u_2 and r. r and ~u_2. S_24(a_24) -> u_2.