Consider the following premises. forall x_7: P_7(x_7) or Q_7(x_7). forall x_7: Q_3(x_7). forall x_7: Q_7(x_7) -> R_7(x_7). forall x_7: P_7(x_7) -> R_7(x_7). Can we infer ~s from them?
We cannot infer that from the premises. Therefore the answer is no.