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 z_2, z_2 will not play squash. There is at least one z_2 for which z_2 will play squash or z_2 will play a game.
There is at least one z_2 for which z_2 will play a game can be inferred via the existential disjunctive syllogism rule.