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. There is at least one x_8 for which x_8 is curious. For all x_8, if x_8 were an astronaut, then x_8 is rich. For all x_8, if x_8 were curious, then x_8 is not rich.
Since the premises are contradictory, we can infer anything from them.