Consider the following premises. forall x_16: P_16(x_16) or ~Q_11(x_16). forall x_16: P_16(x_16) <-> Q_16(x_16). Q_11(a_5). Can we infer ~r from them? If possible, name the inference rules being used at each step.
We cannot infer that from the premises. Therefore the answer is no.