What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_8: W_4(x_8) -> W_2(x_8). forall x_8: P(x_8) -> W_2(x_8). forall x_8: W_2(x_8) -> P(x_8). exists x_8: P(x_8).
exists x_8: W_2(x_8). forall x_8: W_4(x_8) -> P(x_8). forall x_8: P(x_8) <-> W_2(x_8). forall x_8: W_2(x_8) <-> P(x_8).