Consider the following premises. For all x_1, if x_1 reads a book, then x_1 is an astronaut. For all x_1, x_1 will climb a mountain or x_1 will read a book. For all x_1, if x_1 climbs a mountain, then x_1 is a police officer. For all x_1, if x_1 were an astronaut, then x_1 is a police officer. Can we infer the following from them? For all x_1, x_1 is a police officer.
 From the fact that for all x_1, if x_1 reads a book, then x_1 is an astronaut, and that for all x_1, if x_1 were an astronaut, then x_1 is a police officer we can infer that for all x_1, if x_1 reads a book, then x_1 is a police officer. Finally, from the fact that for all x_1, if x_1 climbs a mountain, then x_1 is a police officer, that for all x_1, if x_1 reads a book, then x_1 is a police officer, and that for all x_1, x_1 will climb a mountain or x_1 will read a book we can infer that for all x_1, x_1 is a police officer. Therefore, the answer is yes.