Consider the following premises. forall x_1: U(x_1) <-> R(x_1). forall x_1: R(x_1) -> T(x_1). forall x_1: U(x_1) <-> T(x_1). Can we infer forall x_1: R(x_1) -> T(x_1) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.