Consider the following premises. forall x_6: P(x_6) or ~Q_6(x_6). forall x_6: Q_6(x_6) or Q_4(x_6). exists x_6: P(x_6) -> T(x_6). forall x_6: Q_4(x_6) -> P(x_6). Can we infer forall x_6: Q_6(x_6) or Q_4(x_6) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.