Consider the following premises. For all x_5, x_5 will cook. For all x_5, x_5 will work. For all x_5, if x_5 works, then x_5 is playing tennis. For all x_5, if x_5 cooks, then x_5 is taking a plane. Can we infer the following from them? There is at least one x_5 for which either x_5 will take a plane or x_5 will play tennis are not true.
 From the fact that for all x_5, if x_5 works, then x_5 is playing tennis, and that for all x_5, x_5 will work we can infer that for all x_5, x_5 will play tennis. From the fact that for all x_5, if x_5 cooks, then x_5 is taking a plane, and that for all x_5, x_5 will cook we can infer that for all x_5, x_5 will take a plane. Finally, from the fact that for all x_5, x_5 will take a plane, and that for all x_5, x_5 will play tennis we can infer that for all x_5, x_5 will take a plane and x_5 will play tennis, which contradicts that There is at least one x_5 for which either x_5 will take a plane or x_5 will play tennis are not true. Therefore, the answer is no.