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 takes a plane, then x_6 is an electrician. For all x_6, if x_6 were an electrician, then x_6 is a bartender. There is at least one x_6 for which if x_6 were a bartender, then x_6 is an electrician. For all x_6, x_6 is a bartender or x_6 will take a plane.
For all x_6, if x_6 takes a plane, then x_6 is a bartender. There is at least one x_6 for which x_6 is an electrician. There is at least one x_6 for which x_6 is a bartender if and only if x_6 is an electrician. There is at least one x_6 for which x_6 is an electrician if and only if x_6 is a bartender.