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_8, x_8 is not curious. For all x_8, if x_8 takes a plane, then x_8 is a janitor. For all x_8, x_8 is a politician. For all x_8, if x_8 plays squash, then x_8 is a janitor. For all x_8, x_8 is curious or x_8 will play squash.
For all x_8, x_8 will play squash can be inferred via the universal disjunctive syllogism rule.