Consider the following premises. exists x_11: ~Q_11(x_11). forall x_11: P_11(x_11) or Q_11(x_11). forall x_11: ~P_11(x_11) or W_3(x_11). Can we infer forall x_11: ~(W_3(x_11) or R_2(x_11)) from them? If possible, name the inference rules being used at each step.
That contradicts the premises. Therefore the answer is no.