What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: exists x_5: ~W(x_5) or R(x_5). forall x_5: P_5(x_5). forall x_5: ~P_5(x_5) or W(x_5). forall x_5: ~Q_5(x_5) or W_2(x_5).
Nothing can be inferred from these premises.