What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 is an astronaut if and only if x_8 is poor. For all x_8, x_8 is not an astronaut. Sarah is poor if and only if Michael is driving a car.
If Sarah were poor, then Michael is driving a car. If Michael drives a car, then Sarah is poor. For all x_8, if x_8 were an astronaut, then x_8 is poor. For all x_8, if x_8 were poor, then x_8 is an astronaut. For all x_8, x_8 is not poor.