What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~w. forall x_4: U(x_4) <-> P(x_4). P(d_2) <-> w.
P(d_2) -> w. w -> P(d_2). ~P(d_2). forall x_4: U(x_4) -> P(x_4). forall x_4: P(x_4) -> U(x_4).