Consider the following premises. R_14(f_3) -> u. Q_14(f_3) -> u. q. forall x_14: ~P_14(x_14) or R_14(x_14). forall x_14: P_14(x_14) or Q_14(x_14). Can we infer u -> q 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.