Consider the following premises. R_14(a_14). forall x_14: R_14(x_14) -> S_14(x_14). p -> ~S_14(a_14). Can we infer ~p from them? If possible, name the inference rules being used at each step.
 From forall x_14: R_14(x_14) -> S_14(x_14) we can infer R_14(a_14) -> S_14(a_14) via universal instantiation. From R_14(a_14) -> S_14(a_14), R_14(a_14) we can infer S_14(a_14) via modus ponens. Finally, from p -> ~S_14(a_14), S_14(a_14) we can infer ~p via modus tollens. Therefore, the answer is yes.