Consider the following premises. For all x_11, x_11 is a soldier or x_11 will play squash. For all x_11, if x_11 were fast, then x_11 is playing tennis. For all x_11, x_11 is not a soldier. For all x_11, x_11 is fast or x_11 will sleep. For all x_11, if x_11 sleeps, then x_11 is playing tennis. Can we infer the following from them? If we can, name the inference rule being used: Richard is not playing tennis.
That contradicts the premises. Therefore the answer is no.