Consider the following premises. There is at least one x_1 for which if x_1 were a taxi driver, then x_1 is excited. For all x_1, if x_1 plays tennis, then x_1 is a taxi driver. For all x_1, x_1 is not excited. Can we infer the following from them? For all x_1, x_1 will play tennis.
 From the fact that there is at least one x_1 for which if x_1 were a taxi driver, then x_1 is excited, and that for all x_1, x_1 is not excited we can infer that there is at least one x_1 for which x_1 is not a taxi driver. Finally, from the fact that for all x_1, if x_1 plays tennis, then x_1 is a taxi driver, and that there is at least one x_1 for which x_1 is not a taxi driver we can infer that there is at least one x_1 for which x_1 will not play tennis, which contradicts that For all x_1, x_1 will play tennis. Therefore, the answer is no.