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_7, x_7 is a server. For all x_7, x_7 is not a server. There is at least one x_7 for which x_7 will play a game.
Since the premises are contradictory, we can infer anything from them.