What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, if x_7 were an astronaut, then x_7 is running. For all x_7, x_7 will not listen to a song or x_7 is an astronaut. For all x_7, x_7 will listen to a song. For all x_7, if x_7 goes running, then x_7 is a police officer. For all x_7, if x_7 reads a book, then x_7 is a police officer.
For all x_7, if x_7 were an astronaut, then x_7 is a police officer.