What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_2: R(x_2) <-> P(x_2). forall x_2: W_4(x_2) <-> R(x_2).
forall x_2: W_4(x_2) -> R(x_2). exists x_2: R(x_2) -> P(x_2). forall x_2: R(x_2) -> W_4(x_2). exists x_2: P(x_2) -> R(x_2).