Consider the following premises. For all x_12, x_12 will drive a car or x_12 will not play squash. For all x_12, if x_12 were a soldier, then x_12 is a doctor. For all x_12, x_12 is a soldier. For all x_12, if x_12 plays tennis, then x_12 is not a doctor. For all x_12, if x_12 drives a car, then x_12 is a doctor. Can we infer the following from them? For all x_12, x_12 will not play tennis.
 From the fact that for all x_12, x_12 will drive a car or x_12 will not play squash we can infer that for all x_12, if x_12 plays squash, then x_12 is driving a car. From the fact that for all x_12, x_12 is a soldier we can infer that for all x_12, x_12 is a soldier or x_12 will play squash. From the fact that for all x_12, if x_12 plays squash, then x_12 is driving a car, and that for all x_12, if x_12 drives a car, then x_12 is a doctor we can infer that for all x_12, if x_12 plays squash, then x_12 is a doctor. From the fact that for all x_12, if x_12 were a soldier, then x_12 is a doctor, that for all x_12, if x_12 plays squash, then x_12 is a doctor, and that for all x_12, x_12 is a soldier or x_12 will play squash we can infer that for all x_12, x_12 is a doctor. Finally, from the fact that for all x_12, if x_12 plays tennis, then x_12 is not a doctor, and that for all x_12, x_12 is a doctor we can infer that for all x_12, x_12 will not play tennis. Therefore, the answer is yes.