Consider the following premises. forall x_10: R_10(x_10) -> S_10(x_10). ~S_10(a_10). w -> R_10(a_10). Can we infer w from them?
 From forall x_10: R_10(x_10) -> S_10(x_10) we can infer R_10(a_10) -> S_10(a_10). From w -> R_10(a_10), R_10(a_10) -> S_10(a_10) we can infer w -> S_10(a_10). Finally, from w -> S_10(a_10), ~S_10(a_10) we can infer ~w, which contradicts w. Therefore, the answer is no.