What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is a taxi driver or x_7 is not a server. There is at least one x_7 for which if x_7 were a taxi driver, then x_7 is an astronaut. For all x_7, if x_7 were an astronaut, then x_7 is fast.
There is at least one x_7 for which if x_7 were a taxi driver, then x_7 is fast. For all x_7, if x_7 were a server, then x_7 is a taxi driver.