Consider the following premises. forall x_9: ~P_9(x_9). forall x_9: P_5(x_9). exists x_9: P_9(x_9) or R_2(x_9). forall x_9: Q_5(x_9). Can we infer forall x_9: ~(R_2(x_9) and P_5(x_9)) from them?
 From exists x_9: P_9(x_9) or R_2(x_9), forall x_9: ~P_9(x_9) we can infer exists x_9: R_2(x_9). Finally, from forall x_9: P_5(x_9), forall x_9: Q_5(x_9) we can infer forall x_9: P_5(x_9) and Q_5(x_9), which contradicts forall x_9: ~(R_2(x_9) and P_5(x_9)). Therefore, the answer is no.