Consider the following premises. For all x_6, if x_6 were a carpenter, then x_6 is a lawyer. For all x_6, x_6 is a carpenter. There is at least one x_6 for which if x_6 were a soldier, then x_6 is not happy. For all x_6, x_6 is happy. Can we infer the following from them? There is at least one x_6 for which x_6 is not a soldier.
 From the fact that for all x_6, if x_6 were a carpenter, then x_6 is a lawyer, and that for all x_6, x_6 is a carpenter we can infer that for all x_6, x_6 is a lawyer. From the fact that for all x_6, x_6 is happy, and that for all x_6, x_6 is a lawyer we can infer that for all x_6, x_6 is happy and x_6 is a lawyer. From the fact that for all x_6, x_6 is happy and x_6 is a lawyer we can infer that for all x_6, x_6 is happy. Finally, from the fact that there is at least one x_6 for which if x_6 were a soldier, then x_6 is not happy, and that for all x_6, x_6 is happy we can infer that there is at least one x_6 for which x_6 is not a soldier. Therefore, the answer is yes.