Consider the following premises. For all x_13, x_13 is a police officer if and only if x_13 is poor. For all x_13, if x_13 plays tennis, then x_13 is a police officer. There is at least one x_13 for which if x_13 were poor, then x_13 is playing tennis. For all x_13, x_13 is not a sailor. For all x_13, x_13 is a sailor if and only if x_13 will play tennis. Can we infer the following from them? For all x_13, x_13 is poor.
 From the fact that for all x_13, x_13 is a police officer if and only if x_13 is poor we can infer that for all x_13, if x_13 were a police officer, then x_13 is poor. From the fact that for all x_13, if x_13 plays tennis, then x_13 is a police officer, and that for all x_13, if x_13 were a police officer, then x_13 is poor we can infer that for all x_13, if x_13 plays tennis, then x_13 is poor. From the fact that for all x_13, x_13 is a sailor if and only if x_13 will play tennis, and that for all x_13, x_13 is not a sailor we can infer that for all x_13, x_13 will not play tennis. From the fact that for all x_13, if x_13 plays tennis, then x_13 is poor, and that there is at least one x_13 for which if x_13 were poor, then x_13 is playing tennis we can infer that there is at least one x_13 for which x_13 will play tennis if and only if x_13 is poor. Finally, from the fact that there is at least one x_13 for which x_13 will play tennis if and only if x_13 is poor, and that for all x_13, x_13 will not play tennis we can infer that there is at least one x_13 for which x_13 is not poor, which contradicts that For all x_13, x_13 is poor. Therefore, the answer is no.