Consider the following premises. exists x_6: P_6(x_6) and Q_6(x_6). forall x_6: W_2(x_6). Can we infer exists x_6: W_2(x_6) and P_6(x_6) from them?
 From exists x_6: P_6(x_6) and Q_6(x_6) we can infer exists x_6: P_6(x_6). Finally, from forall x_6: W_2(x_6), exists x_6: P_6(x_6) we can infer exists x_6: W_2(x_6) and P_6(x_6). Therefore, the answer is yes.