What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_17: ~R_17(x_17). ~w_4 or r_11. q -> ~r_11. w_4 or R_17(a_17).
R_17(a_17) or r_11. R_1(a_17) -> w_4.