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: For all x_5, x_5 will play squash or x_5 is curious. For all x_5, x_5 will not play squash. For all x_5, x_5 is a police officer. For all x_5, if x_5 were a police officer, then x_5 is an artist.
For all x_5, x_5 is an artist can be inferred via the universal modus ponens rule. For all x_5, x_5 is curious can be inferred via the universal disjunctive syllogism rule.