Consider the following premises. forall x_14: P_6(x_14) or ~P_14(x_14). forall x_14: P_9(x_14). forall x_14: P_9(x_14) -> P(x_14). forall x_14: P_14(x_14) or ~P(x_14). Can we infer forall x_14: P_6(x_14) or ~P_14(x_14) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.