What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_17, x_17 is a bartender if and only if x_17 will work. For all x_17, x_17 will take a plane or x_17 will work. For all x_17, if x_17 were a taxi driver, then x_17 is playing squash. For all x_17, if x_17 takes a plane, then x_17 is a bartender. There is at least one x_17 for which x_17 is a taxi driver.
There is at least one x_17 for which x_17 will play squash. For all x_17, if x_17 were a bartender, then x_17 is working. For all x_17, if x_17 works, then x_17 is a bartender.