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 a bartender or x_8 will go running. For all x_8, x_8 is a bartender if and only if x_8 is an astronaut. For all x_8, x_8 is not an astronaut.
For all x_8, if x_8 were a bartender, then x_8 is an astronaut. For all x_8, if x_8 were an astronaut, then x_8 is a bartender. For all x_8, x_8 is not a bartender.