What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~R(i). forall y: U_1(y) <-> R(y). q_3.
~R(i) and q_3. q_3 and ~R(i). forall y: U_1(y) -> R(y). forall y: R(y) -> U_1(y).