Consider the following premises. For all x_13, x_13 will play tennis if and only if x_13 is happy. For all x_13, x_13 is a carpenter if and only if x_13 is happy. For all x_13, x_13 is a cashier or x_13 will play tennis. For all x_13, x_13 is not a cashier or x_13 is a carpenter. Can we infer the following from them? For all x_13, x_13 is happy or x_13 is a soldier.
 From the fact that for all x_13, x_13 is a carpenter if and only if x_13 is happy we can infer that for all x_13, if x_13 were a carpenter, then x_13 is happy. From the fact that for all x_13, x_13 is a cashier or x_13 will play tennis, and that for all x_13, x_13 is not a cashier or x_13 is a carpenter we can infer that for all x_13, x_13 will play tennis or x_13 is a carpenter. From the fact that for all x_13, x_13 will play tennis if and only if x_13 is happy we can infer that for all x_13, if x_13 plays tennis, then x_13 is happy. From the fact that for all x_13, if x_13 plays tennis, then x_13 is happy, that for all x_13, if x_13 were a carpenter, then x_13 is happy, and that for all x_13, x_13 will play tennis or x_13 is a carpenter we can infer that for all x_13, x_13 is happy. Finally, from the fact that for all x_13, x_13 is happy we can infer that for all x_13, x_13 is happy or x_13 is a soldier. Therefore, the answer is yes.