Consider the following premises. forall y_3: T(y_3) -> R_4(y_3). forall y_3: ~R_4(y_3). forall y_3: T(y_3) or ~R_4(y_3). Can we infer forall y_3: T(y_3) or ~R_4(y_3) from them?
That is one of the premises. Therefore, the answer is yes.