What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_11: R_11(x_11) <-> S_11(x_11). ~p_15. p_15 or w_1. ~R_11(a_11).
w_1. ~p_15 and ~R_11(a_11). ~R_11(a_11) and ~p_15. forall x_11: R_11(x_11) -> S_11(x_11). forall x_11: S_11(x_11) -> R_11(x_11).