Consider the following premises. For all x_9, x_9 will sleep or x_9 will not cook. For all x_9, if x_9 climbs a mountain, then x_9 is cooking. For all x_9, if x_9 plays tennis, then x_9 is sleeping. For all x_9, x_9 will play tennis. Can we infer the following from them? There is at least one x_9 for which x_9 will not sleep.
 From the fact that for all x_9, x_9 will play tennis we can infer that for all x_9, x_9 will play tennis or x_9 will climb a mountain. From the fact that for all x_9, x_9 will sleep or x_9 will not cook we can infer that for all x_9, if x_9 cooks, then x_9 is sleeping. From the fact that for all x_9, if x_9 climbs a mountain, then x_9 is cooking, and that for all x_9, if x_9 cooks, then x_9 is sleeping we can infer that for all x_9, if x_9 climbs a mountain, then x_9 is sleeping. Finally, from the fact that for all x_9, if x_9 plays tennis, then x_9 is sleeping, that for all x_9, if x_9 climbs a mountain, then x_9 is sleeping, and that for all x_9, x_9 will play tennis or x_9 will climb a mountain we can infer that for all x_9, x_9 will sleep, which contradicts that There is at least one x_9 for which x_9 will not sleep. Therefore, the answer is no.