Consider the following premises. u_4 -> P_8(a_7). forall x_8: P_8(x_8) -> Q_8(x_8). Q_8(a_7) or u_4. forall x_8: Q_8(x_8) -> P_8(x_8). Can we infer w from them?
We cannot infer that from the premises. Therefore the answer is no.