Consider the following premises. ~S_9(a_9) or w_3. ~r_5. ~R_9(a_9) or r_5. forall x_9: R_9(x_9) or S_9(x_9). Can we infer ~p_4 from them? If possible, name the inference rules being used at each step.
We cannot infer that from the premises. Therefore the answer is no.