What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_1: ~R_4(x_1) or Q(x_1). forall x_1: R(x_1) -> P(x_1). forall x_1: P(x_1) <-> Q(x_1). forall x_1: R_4(x_1) or R(x_1).
exists x_1: R(x_1) or Q(x_1). forall x_1: P(x_1) -> Q(x_1). forall x_1: Q(x_1) -> P(x_1).