Consider the following premises. For all x_6, if x_6 drives a car, then x_6 is playing a game. For all x_6, if x_6 plays tennis, then x_6 is playing a game. For all x_6, x_6 will play tennis or x_6 will drive a car. There is at least one x_6 for which x_6 will go running. Can we infer the following from them? If we can, name the inference rule being used: For all x_6, x_6 will not play a game.
That contradicts the premises. Therefore the answer is no.