Consider the following premises. forall x_2: U(x_2) -> W_4(x_2). forall x_2: U(x_2) or ~W_4(x_2). Can we infer forall x_2: W_4(x_2) -> U(x_2) from them? If possible, name the inference rules being used at each step.
We can infer forall x_2: W_4(x_2) -> U(x_2) via the universal rewriting rule. Therefore, the answer is yes.