Consider the following premises. For all x_15, x_15 is curious if and only if x_15 will make tea. For all x_15, if x_15 were a police officer, then x_15 is a janitor. There is at least one x_15 for which if x_15 were a carpenter, then x_15 is a janitor. For all x_15, x_15 is not a scientist or x_15 is a police officer. For all x_15, x_15 is a scientist or x_15 will make tea. For all x_15, if x_15 were curious, then x_15 is a carpenter. Can we infer the following from them? There is at least one x_15 for which x_15 is a janitor.
 From the fact that for all x_15, x_15 is a scientist or x_15 will make tea, and that for all x_15, x_15 is not a scientist or x_15 is a police officer we can infer that for all x_15, x_15 will make tea or x_15 is a police officer. From the fact that for all x_15, x_15 is curious if and only if x_15 will make tea we can infer that for all x_15, if x_15 makes tea, then x_15 is curious. From the fact that for all x_15, if x_15 makes tea, then x_15 is curious, and that for all x_15, if x_15 were curious, then x_15 is a carpenter we can infer that for all x_15, if x_15 makes tea, then x_15 is a carpenter. From the fact that for all x_15, if x_15 makes tea, then x_15 is a carpenter, and that there is at least one x_15 for which if x_15 were a carpenter, then x_15 is a janitor we can infer that there is at least one x_15 for which if x_15 makes tea, then x_15 is a janitor. Finally, from the fact that there is at least one x_15 for which if x_15 makes tea, then x_15 is a janitor, that for all x_15, if x_15 were a police officer, then x_15 is a janitor, and that for all x_15, x_15 will make tea or x_15 is a police officer we can infer that there is at least one x_15 for which x_15 is a janitor. Therefore, the answer is yes.