Consider the following premises. forall x_14: ~P_14(x_14) or R_14(x_14). ~Q_14(a_12). forall x_14: P_14(x_14) or Q_14(x_14). Can we infer ~p_2 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.