What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_1: W_1(x_1) -> T_4(x_1). forall x_1: T_4(x_1) -> W_1(x_1). forall x_1: T_4(x_1) <-> W_1(x_1).
exists x_1: W_1(x_1) <-> T_4(x_1). exists x_1: T_4(x_1) <-> W_1(x_1). forall x_1: T_4(x_1) -> W_1(x_1). forall x_1: W_1(x_1) -> T_4(x_1).