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 taxi driver. For all x_7, if x_7 goes running, then x_7 is playing a game. For all x_7, x_7 will not play a game. For all x_7, x_7 will go running.
Since the premises are contradictory, we can infer anything from them.