What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_5 for which x_5 will drive a car if and only if x_5 will read a book. For all x_5, x_5 is not an astronaut. For all x_5, if x_5 drives a car, then x_5 is an astronaut. For all x_5, if x_5 were an astronaut, then x_5 is driving a car.
For all x_5, x_5 will not drive a car. For all x_5, x_5 will drive a car if and only if x_5 is an astronaut. For all x_5, x_5 is an astronaut if and only if x_5 will drive a car. There is at least one x_5 for which if x_5 drives a car, then x_5 is reading a book. There is at least one x_5 for which if x_5 reads a book, then x_5 is driving a car.