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_4, x_4 will sleep or x_4 will not climb a mountain. For all x_4, x_4 will make tea or x_4 will climb a mountain. For all x_4, if x_4 plays a game, then x_4 is sleeping. For all x_4, x_4 will not make tea or x_4 will play a game.
For all x_4, x_4 will climb a mountain or x_4 will play a game can be inferred via the universal resolution rule. For all x_4, if x_4 climbs a mountain, then x_4 is sleeping can be inferred via the universal rewriting rule.