Consider the following premises. For all x_10, if x_10 were a janitor, then x_10 is a taxi driver. For all x_10, x_10 is not a taxi driver. If John plays tennis, then James is playing squash. For all x_10, x_10 will play squash if and only if x_10 is a janitor. Can we infer the following from them? If we can, name the inference rule being used: Richard is not playing a game.
We cannot infer that from the premises. Therefore the answer is no.