What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_15 for which if x_15 were an office clerk, then x_15 is a bartender. For all x_15, x_15 is an office clerk. For all x_15, if x_15 were a bartender, then x_15 is excited. For all x_15, x_15 is a janitor if and only if x_15 is excited.
There is at least one x_15 for which x_15 is a bartender. There is at least one x_15 for which if x_15 were an office clerk, then x_15 is excited. For all x_15, if x_15 were a janitor, then x_15 is excited. For all x_15, if x_15 were excited, then x_15 is a janitor.