Consider the following premises. For all x_9, x_9 is a police officer if and only if x_9 will make tea. For all x_9, if x_9 were a police officer, then x_9 is making tea. For all x_9, x_9 will make tea. Can we infer the following from them? For all x_9, x_9 is a police officer.
 From the fact that for all x_9, x_9 is a police officer if and only if x_9 will make tea we can infer that for all x_9, if x_9 makes tea, then x_9 is a police officer. From the fact that for all x_9, if x_9 were a police officer, then x_9 is making tea, and that for all x_9, if x_9 makes tea, then x_9 is a police officer we can infer that for all x_9, x_9 is a police officer if and only if x_9 will make tea. From the fact that for all x_9, x_9 is a police officer if and only if x_9 will make tea we can infer that for all x_9, if x_9 makes tea, then x_9 is a police officer. Finally, from the fact that for all x_9, if x_9 makes tea, then x_9 is a police officer, and that for all x_9, x_9 will make tea we can infer that for all x_9, x_9 is a police officer. Therefore, the answer is yes.