What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, x_12 will play a game or x_12 is a police officer. For all x_12, x_12 is an astronaut if and only if x_12 will work. For all x_12, if x_12 were a police officer, then x_12 is an astronaut. For all x_12, if x_12 plays a game, then x_12 is working. There is at least one x_12 for which if x_12 reads a book, then x_12 is not an astronaut.
For all x_12, if x_12 were an astronaut, then x_12 is working. For all x_12, if x_12 works, then x_12 is an astronaut.