What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_1: U(y_1) -> U_4(y_1). forall y_1: ~U_4(y_1). forall y_1: S(y_1) -> T(y_1). forall y_1: T(y_1) -> U(y_1).
forall y_1: ~U(y_1). forall y_1: S(y_1) -> U(y_1). forall y_1: T(y_1) -> U_4(y_1).