Consider the following premises. For all x_10, x_10 will not make tea. For all x_10, if x_10 were a police officer, then x_10 is playing tennis. For all x_10, if x_10 were a taxi driver, then x_10 is making tea. There is at least one x_10 for which x_10 is a taxi driver or x_10 is a police officer. Can we infer the following from them? There is at least one x_10 for which x_10 will play tennis.
 From the fact that for all x_10, if x_10 were a taxi driver, then x_10 is making tea, and that for all x_10, x_10 will not make tea we can infer that for all x_10, x_10 is not a taxi driver. From the fact that there is at least one x_10 for which x_10 is a taxi driver or x_10 is a police officer, and that for all x_10, x_10 is not a taxi driver we can infer that there is at least one x_10 for which x_10 is a police officer. Finally, from the fact that for all x_10, if x_10 were a police officer, then x_10 is playing tennis, and that there is at least one x_10 for which x_10 is a police officer we can infer that there is at least one x_10 for which x_10 will play tennis. Therefore, the answer is yes.