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_2, x_2 is not a cashier or x_2 will go running. There is at least one x_2 for which x_2 will not play a game. For all x_2, x_2 is a cashier or x_2 will play a game.
For all x_2, x_2 will play a game or x_2 will go running can be inferred via the universal resolution rule.