What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~S_19(a_19). s_2 -> w_3. w_3 <-> R_19(a_19). forall x_19: R_19(x_19) -> S_19(x_19).
w_3 -> R_19(a_19). R_19(a_19) -> w_3.