Consider the following premises. p_4 or R_14(a_14). forall x_14: R_14(x_14) -> S_14(x_14). ~p_4. Can we infer ~S_14(a_14) from them?
 From forall x_14: R_14(x_14) -> S_14(x_14) we can infer R_14(a_14) -> S_14(a_14). From p_4 or R_14(a_14), ~p_4 we can infer R_14(a_14). Finally, from R_14(a_14) -> S_14(a_14), R_14(a_14) we can infer S_14(a_14), which contradicts ~S_14(a_14). Therefore, the answer is no.