What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 were a sailor, then x_6 is a doctor. For all x_6, x_6 is not a police officer or x_6 is a sailor. For all x_6, if x_6 were a bartender, then x_6 is a doctor. There is at least one x_6 for which x_6 will work. For all x_6, x_6 is a police officer or x_6 is a bartender.
For all x_6, x_6 is a bartender or x_6 is a sailor.