Consider the following premises. forall x_10: ~R_10(x_10). R_10(a_10) or ~w. Can we infer ~w from them?
 From forall x_10: ~R_10(x_10) we can infer ~R_10(a_10). From R_10(a_10) or ~w we can infer w -> R_10(a_10). Finally, from w -> R_10(a_10), ~R_10(a_10) we can infer ~w. Therefore, the answer is yes.